| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 9 | |
| #2 | Canada | 2 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Machines | |
| #3 | Consumer goods | |
| #4 | Civil engineering | |
| #5 | Audio-visual technology | |
| #6 | Medical technology | |
| #7 | Thermal processes | |
| #8 | Agriculture |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Machines for making railways | |
| #3 | Turning | |
| #4 | Ignition and extinguishing | |
| #5 | Advertising | |
| #6 | Walking sticks | |
| #7 | Rolling metal | |
| #8 | Smoking accessories | |
| #9 | Physical therapy devices | |
| #10 | Treating harvested food |
| # | Name | Total Patents |
|---|---|---|
| #1 | Schroeder Frank J | 11 |
| Publication | Filing date | Title |
|---|---|---|
| US2672547A | Cigar and cigarette lighter | |
| US2537710A | Electric cigarette lighter | |
| US2376282A | Nonskid attachment for crutches or canes | |
| US1703068A | Indicating system for refrigerators | |
| US1665115A | Rail lock | |
| US1657940A | Rail lock | |
| US1542007A | Cutting tool | |
| US1379049A | Onion-topping machine | |
| US1091540A | S-iron-bending machine. | |
| CA286429A | Rail lock | |
| CA269579A | Cutter |