| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 7 | |
| #2 | France | 3 | |
| #3 | Germany | 2 |
| # | Industry | |
|---|---|---|
| #1 | Optics | |
| #2 | Machines | |
| #3 | Electrical machinery and energy | |
| #4 | Telecommunications | |
| #5 | Basic materials chemistry | |
| #6 | Chemical engineering | |
| #7 | Textiles and paper | |
| #8 | Mechanical elements | |
| #9 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Cameras | |
| #2 | Shaping of plastics | |
| #3 | Telephonic communication | |
| #4 | Acetylene production | |
| #5 | Producing goods from plastic | |
| #6 | Chemical or physical processes | |
| #7 | Electric discharge tubes | |
| #8 | Pistons and sealings | |
| #9 | Ice-boxes | |
| #10 | Printing machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Dunham Foster Warren | 4 |
| #2 | Waldorf Sigmund K | 2 |
| #3 | Whitwell Wilson Oliver | 2 |
| #4 | Trust Company Peoples-Pittsbur | 2 |
| #5 | Reuben Foster | 2 |
| #6 | Holley Clarence M | 1 |
| #7 | Worswick Alan | 1 |
| #8 | Foster | 1 |
| #9 | Mackusick | 1 |
| #10 | Foster Howard L | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2391497A | Film handling apparatus and magazine for use therewith | |
| US2351088A | Film handling apparatus | |
| US2009443A | Film handling apparatus | |
| US1969642A | Luminescent electrical discharge device | |
| US1893325A | Telephone dial illumination | |
| US2009442A | Photographic apparatus | |
| US1868359A | Artificial refrigerating apparatus |