| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Optics | |
| #3 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | Gearing | |
| #2 | Optical systems | |
| #3 | Toys |
| # | Name | Total Patents |
|---|---|---|
| #1 | Morgan Porter S | 4 |
| #2 | Linsley Douglas F | 4 |
| #3 | Miller Harry J Jr | 3 |
| Publication | Filing date | Title |
|---|---|---|
| CA619789A | Praxinoscopic devices | |
| CA686820A | Variable speed transmission | |
| CA596252A | Transmissions | |
| CA678566A | Rotatable tool with clutch | |
| CA635644A | Ratchet-type tools and clutches therefor | |
| CA654275A | Positive displacement hydraulic pump and motor unit | |
| CA710554A | Transmission systems and controls therefor | |
| CA528249A | Ball and inclined race mechanical movements |