| 1920 WENZEL Power Transmission Apparatus Patent |
| 1956 NEWMAN Apparatus For Testing Muscles Patent |
| 1967 RUSSELL Sighting Apparatus Patent Print Art |
| 1942 BARBOT NOEL Game Apparatus Patent Print Art |
| 1924 DUMPE NEWMAN Game Apparatus Patent Print |
| 1921 KENNEDY Reflecting Apparatus Patent Print |
| 1969 DUPORT Reversible Hydraulic Apparatus |
| 1935 ANDERSON Air Conditioning Apparatus Patent |
| 1969 FRANK P MILLER Support Apparatus Patent |
| 1926 ANDREW HAEGELE Game Apparatus Patent Print |
| 1904 DEMPSTER Spark Gap for Roentgen Ray Apparatus Pate |
| 1861 KESMODEL Pad Making Apparatus Patent 5947 |
| 1964 WAYFIELD Swimming Instruction Apparatus Art |
| 1928 MILLS GORDON Game Apparatus Patent Print |
| 1936 TRANE CO Air Conditioning Apparatus Patent |
| 1963 BARENHOLTZ Playground Apparatus Patent |
| 1965 MERDICH Children's Play Apparatus Patent |
| 1968 BSP CO LTD Hoisting Block Apparatus Patent |
| 1958 BROOKS Apparatus For Unloading Cars Patent |
| 1926 BROOKS MAX Game Apparatus Patent Print Art |
| 1932 LLOYD Inverted Dancing Apparatus Patent |
| 1966 DOMINIC Gate Lift Apparatus Patent Print |
| 1951 TOBIAS Presser Foot Control Apparatus Art |
| 1940 WATERS ALBERT Nesting Apparatus Patent |
| 1920 SHARPE Game Apparatus Design Patent 7180 |
| 1932 ROBERDS Cycle Propelling Apparatus Patent |
| 1966 ALLEN Apparatus For Vaporizing Insecticides |
| 1951 ALLAN CRAWFORD Tufting Apparatus Patent |
| 1924 CHRISTIAN Game Apparatus Patent Print Art |
| 1938 JOZE ALLEN Game Apparatus Patent Print Art |
| 1956 ROLFSON Apparatus For Sewing Buttons Patent |
| 1904 PROBES Game Apparatus Patent 20589 |
| 1958 KROUSE BENJAMIN Control Apparatus Patent |
| 1856 HARDINGE Silica Disolving Apparatus Patent 12764 |
| 1969 KENYON Board Game Apparatus Patent Print |
| 1967 HEINZ Animal Food Portioning Apparatus |
| 1931 MEARS Speed Control Apparatus Patent Print |
| 1951 DEIHLE Racing Game Apparatus Patent Print |
| 1933 YOUNG Gas Protective Apparatus Patent Print |
| 1939 ZAPARKA Airplane Control Apparatus Patent |
| 1949 NEWELL Temperature Responsive Apparatus Art |
| 1935 WILLIAM Scoring Apparatus And The Like Art |
| 1925 BAUSMAN Apparatus Packing NATIONAL Patent 20370 |
| 1965 SOEHRMAN Article Supporting Apparatus |
| 1928 MORSE Dusting Apparatus For Aircraft Patent |
| 1962 NED O'DAY Washing Apparatus Patent Print |
| 1922 MILLER CLARENCE Game Apparatus Patent Print |
| 1921 PETAR Life Sustaining Apparatus Patent |
| 1924 MILLER HELEN Game Apparatus Patent Print |
| 1938 RUBINI CIGAR COMPANY Game Apparatus Patent |
| 1943 FRAZIER SHERMAN Target Apparatus Patent |
| 1965 ALFREDO SALAZAR Game Apparatus Patent |
| 1967 STEWART Drop And Spin Test Apparatus Patent |
| 1921 RENE Portable Diffusion Apparatus Patent |
| 1938 SMALL Basketball Signal Apparatus Patent |
| 1955 MILLS Lubricating Apparatus Patent Print |
| 1917 GUILFORD Score Keeping Apparatus Patent 20712 |
| 1963 STRAUSS Hit Indicator Apparatus Patent |
| 1935 MCDONALD Game Apparatus Patent 20805 |
| 1950 MICHAEL Pontoon Flotation Apparatus Patent |
| 1938 DOLL Racket Stringing Apparatus Patent |
| 1953 BROST Horse Racing Game Apparatus Patent |
| 1940 ARCHIBALD NEVIN Game Apparatus Patent Print |
| 1940 KURT SCHLESINGER Television Apparatus Art |
| 1946 ELLIOTT Preselector Apparatus Patent Print |
| 1969 PEACOCK Cloth Shaping Apparatus Patent |
| 1936 STORER Transportation Apparatus Patent |
| 1969 CURRIE Transducer Control Apparatus Patent |
| 1965 DEANER Altitude Sensing Apparatus Patent |
| 1930 HOLMES SYDNEY Game Apparatus Patent Print |
| 1932 COLLINS Gun Type Dusting Apparatus Patent |
| 1925 GREEN LEE Dusting Apparatus Patent Print |
| 1948 EAVES Sound Projecting Apparatus Patent |
| 1940 LEONARDO COLALUCA Game Apparatus Patent |
| 1950 NICHOLSON Traffic Protection Apparatus Art |
| 1959 HENNIK BURTIS Game Apparatus Patent Print |
| 1960 MOSES Strategical War Game Apparatus Patent |
| 1887 COLLINS Beverage Shaking Apparatus Patent 9665 |
| 1962 DIRLIK Motion Transforming Apparatus Patent |
| 1922 PAUL HARSHA Game Apparatus Patent Print Art |
| 1945 STEWART GEORGE Game Apparatus Patent Print |
| 1942 TOMPKINS Stage Setting Apparatus Patent |
| 1967 PETERSON WILLIAM Fuze Apparatus Patent |
| 1966 COPELAND Thrust Control Apparatus Patent |
| 1926 DALLYN LUCAS Mine Sweeping Apparatus Patent |
| 1921 VITTORIO PASTRENGO Aerial Apparatus Patent |
| 1894 TROXLER Game Apparatus Patent 20526 |
| 1960 JAMES MILHEM Trailer Apparatus Patent Print |
| 1912 ZIMDARS Game Apparatus Design Patent 8790 |
| 1960 SEYMOUR Exercising Game Apparatus Patent |
| 1884 ELLIS Wire Cleaning Apparatus Patent 11794 |
| 1935 HOCHRIEM Game Apparatus Patent 20799 |
| 1839 BROWN Leather Tanning Apparatus Patent 9918 |
| 1889 HOFER Game Apparatus Design Patent 12212 |
| 1933 MILLS Game Apparatus Patent 20777 |
| 1967 SWAIN Submersible Towing Apparatus Patent |
| 1936 TOMPKINS Striking Bag Apparatus Patent |
| 1967 GYULA Apparatus For Walking On Water Patent |
| 1950 SMITH Air Conditioning Apparatus Patent |
| 1890 KRAUSE Vending Apparatus KRAUSE Patent 19651 |