Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5986539 | Hafe-duplex two-wire DC power-line communication system | Fritz H. Johansson | 1999-11-16 |
| 5894711 | Box handling apparatus and method | James Paul Davidson, Andrew Lunday, James C. Lenk, Gary L. Anderson, Larry W. Shive | 1999-04-20 |
| 4794238 | Method and apparatus for reading and marking a small bar code on a surface of an item | — | 1988-12-27 |
| 4770012 | Electronic digital combination lock | Fritz H. Johansson | 1988-09-13 |
| 4457148 | Electronic digital combination lock | Fritz H. Johansson | 1984-07-03 |