| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 29 | |
| #2 | Canada | 7 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Machines | |
| #3 | Mechanical elements | |
| #4 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Couplings | |
| #2 | Rail vehicle suspensions | |
| #3 | Unspecified technologies | |
| #4 | Vehicle brake control systems | |
| #5 | Clutches and brakes | |
| #6 | Making forged metal products | |
| #7 | Shafts | |
| #8 | Railway brakes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Campbell Sterling H | 36 |
| Publication | Filing date | Title |
|---|---|---|
| US1502459A | Brake-shoe key | |
| US1508380A | Coupler-release rigging | |
| US1482885A | Coupler release rigging | |
| US1482884A | Coupler release rigging | |
| US1508379A | Coupler-release rigging | |
| US1453002A | Coupling-release rigging | |
| US1452358A | Coupling-release rigging | |
| US1387685A | Coupling-release rigging | |
| US1455386A | Coupler-release rigging | |
| US1396726A | Coupling-release rigging | |
| US1396725A | Coupling-release rigging | |
| US1391716A | Brake-rod jaw | |
| US1358363A | Bracket for uncoupling devices | |
| US1358362A | Uncoupling device | |
| US1358361A | Connection for pin-lifters | |
| US1375361A | Brake-rod jaw | |
| US1387684A | Attachment for pin-lifters | |
| US1297440A | Bracket for uncoupling-rods. | |
| US1247221A | Uncoupling device for railway-cars. | |
| US1204405A | Wedge for journal-bearings. |