| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 29 | |
| #2 | Canada | 4 |
| # | Industry | |
|---|---|---|
| #1 | Packaging and shipping | |
| #2 | Transport | |
| #3 | Machines | |
| #4 | Mechanical elements | |
| #5 | Chemical engineering | |
| #6 | Machine tools | |
| #7 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Transport or storage devices | |
| #2 | Railway shifting | |
| #3 | Cranes | |
| #4 | Unspecified technologies | |
| #5 | Winches | |
| #6 | Clutches and brakes | |
| #7 | Rotary pistons | |
| #8 | Separating solids | |
| #9 | Ships | |
| #10 | Grinding or polishing devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Lovell Frederick W | 9 |
| #2 | Kaltenbach Robert W | 6 |
| #3 | Mcmyler John | 5 |
| #4 | Wright James F | 4 |
| #5 | Justin Griess | 1 |
| #6 | Crist Robert W | 1 |
| #7 | Munn Donald S | 1 |
| #8 | Fickinger Presly J | 1 |
| #9 | Carse Orlando M | 1 |
| #10 | Titcomb George E | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1707984A | Car dumper | |
| US1651656A | Stabilizer for locomotive cranes | |
| US1681742A | Boat unloader | |
| US1579927A | Rolling car dumper | |
| US1575415A | Locking device for car-dumper platforms | |
| US1572654A | Car-dumping apparatus | |
| US1561459A | Rope-deflecting device | |
| US1632865A | Clutch-operating mechanism | |
| US1631392A | Clutch-operating mechanism | |
| US1582274A | Crane | |
| US1464718A | Grab bucket | |
| US1443078A | Floating crane | |
| US1440396A | Boat-loading apparatus | |
| US1296201A | Hoisting and conveying apparatus. | |
| US1352608A | Box-car unloader | |
| US1282144A | System for handling coal and the like. | |
| US1253068A | Car-tilting apparatus. | |
| US1240466A | Car-handling system. | |
| US1275373A | Rotary steam-engine. | |
| US1125110A | Car-haulage system. |