Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5230583 | Method of sealing openings in manhole covers using a pick hole plug | — | 1993-07-27 |
| 5090713 | Elastomeric gasket for sealing a glass fiber reinforced cover to a vault | — | 1992-02-25 |
| 5038487 | Attachment for framer's square | — | 1991-08-13 |
| 4934715 | Gasket for use with manhole covers | — | 1990-06-19 |
| 4712800 | Split elastomer ring for repairing potheads and process of repairing a pothead therewith | — | 1987-12-15 |