Issued Patents All Time
Showing 26–30 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4529786 | Acrylate and methacrylate monoesters of pentaerythritol and pentaerythritol orthoesters and polymers and copolymers derived therefrom | Henry K. Hall, Jr. | 1985-07-16 |
| 4526949 | Acrylate and methacrylate monoesters of pentaerythritol and pentaerythritol orthoesters and polymers and copolymers derived therefrom | Henry K. Hall, Jr. | 1985-07-02 |
| 4405798 | Acrylate and methacrylate monoesters of pentaerythritol and pentaerythritol orthoesters and polymers and copolymers derived therefrom | Henry K. Hall, Jr. | 1983-09-20 |
| 4314103 | Telephone answering system with simulated dial tone disconnect protection | — | 1982-02-02 |
| 4269269 | Lock tab for centralizer end ring | — | 1981-05-26 |