Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12306021 | Digital rod position indication system and method | Timothy S. Meyers | 2025-05-20 |
| 5504454 | Demodulator for powerline carrier communications | Kenneth E. Daggett | 1996-04-02 |
| 4962496 | Transmission of data via power lines | Leonard C. Vercellotti | 1990-10-09 |
| 4903006 | Power line communication system | — | 1990-02-20 |
| 4885563 | Power line carrier communication system | Richard A. Johnson, Arthur A. Anderson | 1989-12-05 |
| 4776433 | Elevator door control system | James L. Lagree, Richard A. Johnson, Daphne D'Zurko | 1988-10-11 |
| 4714926 | Rod position indication system with temperature compensation | James A. Neuner | 1987-12-22 |
| 4668465 | Method and apparatus for remotely monitoring a process carried out in a containment structure | James D. Fetrow, Charles G. Geis, Fred J. Mills, James A. Neuner | 1987-05-26 |
| 4646319 | Bidirectional bus coupler presenting peak impedance at carrier frequency | Joseph C. Engel, Leonard C. Vercellotti | 1987-02-24 |
| 4631537 | Method for temperature compensating a rod position indication system | James A. Neuner, Susan A. Wilbur, Charles G. Geis | 1986-12-23 |
| 4629983 | Digital rod position detector system | James A. Neuner | 1986-12-16 |
| 4381852 | Automatic tensioning control for winding stator coils | Herbert E. Ferree | 1983-05-03 |
| 4278150 | Elevator system | Henry A. Wehrli, III, Alvin O. Lund, deceased | 1981-07-14 |