Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5570422 | Telephone network interface device | John J. Napiorkowski, Thomas W. Kroll, Boyd G. Brower, Robert A. Crane, Walter K. Butler, III +2 more | 1996-10-29 |
| 5357565 | Hinge shield for network interface enclosure | Walter K. Butler, III, Thomas H. Blaisdell | 1994-10-18 |