| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 16 | |
| #2 | Canada | 8 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Transport | |
| #3 | Civil engineering | |
| #4 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Railway brakes | |
| #3 | Vehicle brake control systems | |
| #4 | Earth drilling | |
| #5 | Gearing |
| # | Name | Total Patents |
|---|---|---|
| #1 | Blackall Robert H | 14 |
| #2 | Lindstroem Charles A | 3 |
| #3 | Fralich John S Y | 2 |
| #4 | Ord Lewis C | 1 |
| #5 | Blackhall Robert H | 1 |
| #6 | Willing Arthur Ulysses | 1 |
| #7 | Lindstrom Charles A | 1 |
| #8 | Webster George A | 1 |
| #9 | Evans Ernest Ashforth | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1452784A | Ratchet-brake mechanism | |
| US1252539A | Ratchet-brake mechanism. | |
| CA167727A | Ratchet for brakes | |
| CA166018A | Ratchet for cars | |
| CA166017A | Brake handle | |
| US1167262A | Back-off ratchet. | |
| US1167261A | Ratchet mechanism for blind-end cars. | |
| US1167260A | Tunnel-brake. | |
| CA164837A | Ratchet brake mechanism | |
| US1167209A | Brake. | |
| US1167258A | Ratchet-brake mechanism. | |
| CA159758A | Brake | |
| US1136090A | Ratchet-brake mechanism. | |
| US1162994A | Brake-handle. | |
| US1120123A | Ratchet brake mechanism. | |
| US1083519A | Ratchet brake-lever. | |
| CA150068A | Brake mechanism | |
| US1066594A | Hand-actuated brake mechanism. | |
| CA147876A | Brake mechanism | |
| US1120152A | Brake-actuating mechanism. |