Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5420376 | Plastic electrical box for installation in poured concrete | Daniel J. Wanhainen | 1995-05-30 |
| 5417019 | Passthrough device with firestop | David P. Marshall | 1995-05-23 |
| 5390465 | Passthrough device with firestop | — | 1995-02-21 |
| 5170013 | Mounting fastener for elelctrical wiring boxes | Richard J. Borsh | 1992-12-08 |
| 4989905 | Fitting for corrugated tubing | — | 1991-02-05 |