Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4361219 | Swivelling arrangements | William R. Aldridge | 1982-11-30 |
| 4264051 | Laterally adjustable multiple head | William R. Aldridge | 1981-04-28 |
| 4251046 | Extensible beam arrangement | William R. Aldridge | 1981-02-17 |