Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5531408 | Railroad switch stand | — | 1996-07-02 |
| 5270514 | Method and apparatus for flash butt welding railway rails | Charles R. Battisti | 1993-12-14 |
| 5183519 | Method for quenching railway rail heads | Ralph S. Frost | 1993-02-02 |
| 4938460 | Apparatus for air quenching railway heads | Ralph S. Frost | 1990-07-03 |