| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 14 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines | |
| #3 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Clutches and brakes | |
| #2 | Unspecified technologies | |
| #3 | Tools for connecting or disengaging | |
| #4 | Nails | |
| #5 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Smith Robert A | 12 |
| #2 | Serrell John J | 3 |
| #3 | Shepherd Alfred W | 1 |
| #4 | Gray Edward B | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1868544A | Flexible coupling | |
| US1942782A | Flexible coupling | |
| US1935730A | Flexible coupling | |
| US1939370A | Flexible coupling | |
| US1700101A | Prouess for applying and removing bushings | |
| US1700102A | Bushed flexible coupling | |
| US1467400A | Driving key | |
| US1439769A | Driving key and process of fitting the same | |
| US1467399A | Apparatus and process for fitting driving keys | |
| US1439770A | Self-fitting key device | |
| US1615814A | Clutch | |
| US1482097A | Flexible coupling | |
| US1404659A | Flexible coupling pin | |
| US1403271A | Flexible coupling |