Patents per Year
Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 4908995 | Rail grinding method and apparatus | Lawrence W. Dougherty, James R. Fendley, James L. Kraner | 1990-03-20 | $857,000 |
| 4639230 | Apparatus and method for shadow mask insertion | Paul H. Wendt | 1987-01-27 | $4,143,000 |
| 4356606 | Shadow mask inserter apparatus and method | Lawrence W. Dougherty | 1982-11-02 | $3,073,000 |