Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4570780 | Propelling and braking apparatus for a zero pressure accumulator | John A. Thwaites, Hyman Miller | 1986-02-18 |
| 4273239 | Zero pressure accumulator and braking apparatus therefor | John A. Thwaites | 1981-06-16 |