| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 12 |
| # | Industry | |
|---|---|---|
| #1 | Packaging and shipping | |
| #2 | Mechanical elements | |
| #3 | Machines | |
| #4 | Agriculture |
| # | Technology | |
|---|---|---|
| #1 | Transport or storage devices | |
| #2 | Clutches and brakes | |
| #3 | Postal sorting | |
| #4 | Winches | |
| #5 | Harvesting | |
| #6 | Belts or cables for driving | |
| #7 | Nails | |
| #8 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Landahl Eugene E | 12 |
| Publication | Filing date | Title |
|---|---|---|
| US2464590A | Overload releasing mechanism for power transmitting systems | |
| US2464589A | Brake coupling | |
| US2476497A | Drive for overhead conveyers | |
| US2391249A | Self-aligning idler for conveyer belts | |
| US2249531A | Overhead conveyer | |
| US2187498A | Trolley conveyer | |
| US1908905A | Backstop for machinery | |
| US1813626A | Friction clutch | |
| US1580615A | Troughing conveyer | |
| US1694746A | Drive and conveyer chain | |
| US1460491A | Conveying and screening apparatus | |
| US1232052A | Grading or screening apparatus. |