Issued Patents 2022
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11530117 | Tank car lifting apparatus | Barry Isringhausen, Britt Calloway | 2022-12-20 |
| D968745 | Lifting arm | Barry Isringhausen, Britt Calloway, Andrew NITCHIE | 2022-11-01 |
| D967592 | Lifting arm | Barry Isringhausen, Britt Calloway, Andrew NITCHIE | 2022-10-18 |
| 11325814 | Tank car lifting apparatus | Barry Isringhausen, Britt Calloway | 2022-05-10 |