| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 11 | |
| #2 | Canada | 2 |
| # | Industry | |
|---|---|---|
| #1 | Packaging and shipping | |
| #2 | Machines | |
| #3 | Mechanical elements | |
| #4 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Winches | |
| #2 | Gearing | |
| #3 | Unspecified technologies | |
| #4 | Dredging |
| # | Name | Total Patents |
|---|---|---|
| #1 | Lawler Frank P | 10 |
| #2 | Robinson Mayes R | 2 |
| #3 | Lawier Frank P | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2423193A | Overhead shovel | |
| US2448674A | Hoist | |
| US2402756A | Hoist | |
| US2418267A | Hoist | |
| US2354387A | Hoist | |
| US2350120A | Hoist | |
| US2354386A | Hoist | |
| US2301782A | Fair-lead | |
| US2337772A | Winch | |
| US2199668A | Hoist | |
| US2101400A | Earth moving machine | |
| CA413261A | Winch | |
| CA411672A | Cable fair-lead |