| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 10 | |
| #2 | Canada | 2 |
| # | Industry | |
|---|---|---|
| #1 | Packaging and shipping | |
| #2 | Transport | |
| #3 | Machines | |
| #4 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Transport or storage devices | |
| #2 | Railway systems | |
| #3 | Cranes | |
| #4 | Railway bodies | |
| #5 | Handling thin material | |
| #6 | Clutches and brakes | |
| #7 | Milling | |
| #8 | Winches |
| # | Name | Total Patents |
|---|---|---|
| #1 | Norris Almon E | 3 |
| #2 | Mcclellon James M | 2 |
| #3 | Knight Seth F | 1 |
| #4 | Snow Frederick O | 1 |
| #5 | John Ecks | 1 |
| #6 | Williamson Charles S | 1 |
| #7 | Dale Orton G | 1 |
| #8 | Coe Daniel W | 1 |
| #9 | Hammond John W | 1 |
| #10 | Donahue Joseph F | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1935581A | Friction clutch | |
| US1599053A | Car dumper | |
| US1523801A | Endless-chain conveyer | |
| US1406214A | Door | |
| US1162838A | Coal-handling machinery. | |
| US1148482A | Hoist-trolley. | |
| US1096932A | Cable-railway. | |
| US1096931A | Cable-railway. | |
| US1100174A | Crushing-machine. | |
| US991059A | Hoisting apparatus. | |
| CA218686A | Cable railway | |
| CA286519A | Track laying tractor |