| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 28 | |
| #2 | Canada | 3 |
| # | Industry | |
|---|---|---|
| #1 | Consumer goods | |
| #2 | Optics | |
| #3 | Machines | |
| #4 | Medical technology | |
| #5 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Live-saving devices | |
| #2 | Optical systems | |
| #3 | Unspecified technologies | |
| #4 | Unspecified technologies | |
| #5 | Implantable devices | |
| #6 | Spectacles | |
| #7 | Venting or aerating devices | |
| #8 | Syringes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Cover Harvey S | 31 |
| Publication | Filing date | Title |
|---|---|---|
| US2320770A | Respirator | |
| US2284949A | Respirator | |
| US2229838A | Respirator filter | |
| US2227959A | Respirator filter | |
| US2264829A | Respirator | |
| US2065304A | Respirator | |
| US2120231A | Respirator | |
| US2105183A | Valve | |
| US2106795A | Respirator | |
| US2053896A | Respirator | |
| US2112270A | Respirator | |
| US2120230A | Respirator | |
| US2000064A | Respirator | |
| US1978013A | Prism telescope | |
| US1897608A | Prism telescope | |
| US1837208A | Monocular optical instrument | |
| US1802048A | Binocular optical instrument | |
| US1837207A | Monocular optical instrument | |
| US1811614A | Bincoular optical instrument | |
| US1795425A | Binocular optical instrument |