| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 20 | |
| #2 | United States | 9 |
| # | Industry | |
|---|---|---|
| #1 | Packaging and shipping | |
| #2 | Mechanical elements | |
| #3 | Transport | |
| #4 | Agriculture |
| # | Technology | |
|---|---|---|
| #1 | Winches | |
| #2 | Clutches and brakes | |
| #3 | Load transportation vehicles | |
| #4 | Cranes | |
| #5 | Horticulture | |
| #6 | Locomotives |
| # | Name | Total Patents |
|---|---|---|
| #1 | Gorbutt Sidney B | 9 |
| #2 | Grab Gustav A | 5 |
| #3 | Wickes Powers A | 5 |
| #4 | Spain Gail E | 3 |
| #5 | Bukowsky Harry E | 2 |
| #6 | Albert Claypoole | 1 |
| #7 | Claypoole Albert | 1 |
| #8 | Birkenbeuel Edward B | 1 |
| #9 | Claypole Albert | 1 |
| #10 | Siefarth Chester J | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1694931A | Method of and apparatus for transporting logs | |
| US1760828A | Logging engine | |
| US1701614A | Friction thrust for cable drums | |
| US1738747A | Logging unit | |
| US1560984A | Logging engine | |
| US1543889A | Logging engine | |
| US1543888A | Diaphragm air-friction device | |
| US1536558A | Forced-circulation brake | |
| US1464696A | Locomotive | |
| CA281854A | Log transporting method | |
| CA282005A | Hoist frame | |
| CA281177A | Tractor mechanism | |
| CA281492A | Traversing hoist | |
| CA288903A | Flexible grappling bar for lumber carriers | |
| CA301748A | Hoist for oil fields | |
| CA282927A | Tractor hoist | |
| CA292634A | Load supporting mechanism for traversing hoists | |
| CA296059A | Steam boiler | |
| CA294057A | Traversing hoist | |
| CA294058A | Bracket for caterpillar hoists |