Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12084816 | Method and apparatus for retrieving and placing tie plates | Chad H. Sperling | 2024-09-10 |
| 11982057 | Method and apparatus for retrieving and placing tie plates | Chad H. Sperling | 2024-05-14 |
| 11015299 | Method and apparatus for retrieving and placing tie plates | Chad H. Sperling | 2021-05-25 |
| 11015298 | Method and apparatus for retrieving and placing tie plates | Chad H. Sperling | 2021-05-25 |
| 10982394 | Method and apparatus for retrieving and placing tie plates | Chad H. Sperling | 2021-04-20 |
| 8220397 | Method and apparatus for retrieving and placing tie plates | — | 2012-07-17 |
| 7926426 | Railway scrap recovery vehicle | — | 2011-04-19 |
| 7244089 | Device for removing metallic objects from a railway bed | — | 2007-07-17 |
| 6622849 | Hopper door assembly and method for feeding bulk metal objects from a hopper | — | 2003-09-23 |