| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 9 | |
| #2 | Canada | 4 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Machines | |
| #3 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Rail vehicle suspensions | |
| #2 | Unspecified technologies | |
| #3 | Making forged metal products | |
| #4 | Unspecified technologies | |
| #5 | Punching metal |
| # | Name | Total Patents |
|---|---|---|
| #1 | Perry Hubert M | 8 |
| #2 | Crawford George S | 4 |
| #3 | Jenks Charles D | 2 |
| #4 | Welch Albert G | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1655047A | Side bearing | |
| US1756283A | Side bearing | |
| US1748412A | Shim construction for side bearings | |
| US1718217A | Blank for side bearings for railway cars | |
| US1734356A | Metal blank for side bearings | |
| US1615955A | Side bearing for railway cars | |
| US1662328A | Antifriction bearing | |
| US1398390A | Antifriction-bearing | |
| US1456984A | Antifriction bearing | |
| CA206148A | Anti-friction bearing | |
| CA253359A | Antifriction bearing | |
| CA244646A | Antifriction bearing | |
| CA244647A | Side bearing for railway cars |