Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5860268 | Light-weight concrete door | — | 1999-01-19 |
| 5493099 | Cooking apparatus, latching construction therefor and methods of making the same | — | 1996-02-20 |
| 5114792 | Moisture resistant laminated cover electronic utility meter | Charles L. Hamermesh, Evan B. Welch | 1992-05-19 |
| 5080744 | Process to produce a cover for a utility meter register | Charles L. Hamermesh, Evan B. Welch | 1992-01-14 |