| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 19 | |
| #2 | Canada | 4 |
| # | Industry | |
|---|---|---|
| #1 | Packaging and shipping | |
| #2 | Machines | |
| #3 | Mechanical elements | |
| #4 | Transport | |
| #5 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Transport or storage devices | |
| #2 | Unspecified technologies | |
| #3 | Nails | |
| #4 | Cosmonautics | |
| #5 | Earth drilling | |
| #6 | Postal sorting | |
| #7 | Shafts |
| # | Name | Total Patents |
|---|---|---|
| #1 | Buck Herman J | 7 |
| #2 | Courtney William E | 4 |
| #3 | Mathews Rufus P | 3 |
| #4 | Lister Charles H | 3 |
| #5 | Moore Frank E | 2 |
| #6 | Dehler Albert S | 2 |
| #7 | Kellogg Winthrop C | 1 |
| #8 | Buck Herman Joseph | 1 |
| #9 | Friel John J | 1 |
| #10 | Jenkins Harry L | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1226222A | Reversible coupling for gravity-carriers. | |
| US1258776A | Truck. | |
| US1162382A | Inclinable elevator. | |
| US1140110A | Elevator. | |
| US1302631A | Automatic ejector for straight-lift elevators. | |
| US1226182A | Gravity-carrier. | |
| US1238880A | Ball-bearing for gravity-carriers. | |
| US1248069A | Straight-lift elevator. | |
| US1109284A | Conveyer. | |
| US1038842A | Coupling device for carrier-sections. | |
| US1041424A | Carrier. | |
| US1022823A | Gravity-carrier. | |
| CA118619A | Elevator | |
| CA118340A | Gravity carrier | |
| CA118725A | Elevator for gravity carriers | |
| US1020746A | Elevator. | |
| US1028589A | Gravity-carrier. | |
| CA117720A | Gravity freight carrier | |
| US890917A | Gravity-carrier. | |
| US931570A | Elevator. |