Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4852704 | Energy absorption and barrier device for automotive vehicles and method for making the same | Roger L. Brockenbrough | 1989-08-01 |
| 4516884 | Grouting composition cartridge | — | 1985-05-14 |
| 4487529 | Grouting composition and method of using same | — | 1984-12-11 |
| 4214759 | Seal for railroad car hopper doors | Robert J. Elgin | 1980-07-29 |