Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10228073 | Adjustable fail-safe rotary spring operator with a retaining band | Frederick Rand Underwood, III, Kenneth E. Price | 2019-03-12 |
| 10145489 | Adjustable fail-safe rotary spring operator with a retaining band | Frederick Rand Underwood, III, Kenneth E. Price | 2018-12-04 |
| 9151351 | Adjustable fail-safe rotary spring operator with a retaining band | Frederick Rand Underwood, III, Kenneth E. Price | 2015-10-06 |