Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4656795 | Floor panel for elevated floor assembly | Raymond E. Albrecht, John O. Hazen, Robert G. Lindner | 1987-04-14 |
| 4289921 | Electrical activating assembly and closure member therefor | Charles R. Gray, John O. Hazen | 1981-09-15 |