| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 11 | |
| #2 | Canada | 2 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Textiles and paper | |
| #3 | Consumer goods | |
| #4 | Thermal processes | |
| #5 | Electrical machinery and energy | |
| #6 | Control |
| # | Name | Total Patents |
|---|---|---|
| #1 | Semonsen Otto C | 13 |
| Publication | Filing date | Title |
|---|---|---|
| US3196898A | Low pressure steam radiator air vent valves | |
| US3067945A | Radiator valves | |
| US3141613A | Radiator valves | |
| US2621662A | Opener for hairpins | |
| US2399264A | Needle for hand knitting | |
| US2281115A | Electric circuits for producing sparks | |
| US2096352A | Method of producing encircling bands | |
| US2096351A | Encircling band and method of producing same | |
| US2209794A | Tobacco pipe | |
| US1536275A | Holder for knitted fabrics | |
| US1536274A | Hook for mending runs | |
| CA452250A | Needle for hand knitting | |
| CA430222A | Hand knitting device |