Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5669587 | Point detection and indication with latch out means | Daniel W. Van Alstine, George E. Ludwick, George A. Bonner, Mark Hager, Allen Baughman +1 more | 1997-09-23 |
| 5586737 | Switch machine cam bar | Daniel W. Van Alstine | 1996-12-24 |
| 5494242 | Low profile switch machine with hand throw or motor throw selector device | George E. Ludwick, Keith J. Gordon | 1996-02-27 |