Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7065941 | Induction foil cap sealer | Douglas A. Johnson | 2006-06-27 |
| 6732495 | Induction foil cap sealer | Douglas A. Johnson | 2004-05-11 |
| 6629399 | Induction foil cap sealer employing litz wire coil | Douglas A. Johnson | 2003-10-07 |
| 6412252 | Slotted induction heater | Douglas A. Johnson | 2002-07-02 |
| 5257290 | Transmission line termination of guide-communications wire for guided vehicles | Lawrence W. Hill | 1993-10-26 |
| 5245335 | Transceiver system for communication over wire laid along the path of guided/vehicles | Lawrence W. Hill | 1993-09-14 |
| 4766386 | Time domain reflectometer for measuring impedance discontinuities on a powered transmission line | Christopher Oliver | 1988-08-23 |
| 4597082 | Transceiver for multi-drop local area networks | Lawrence W. Hill | 1986-06-24 |
| 4452045 | Smoothing electrical energy output with mechanical accumulator | Ronald W. Matlin, Alan Millner | 1984-06-05 |