Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9140757 | Testing a circuit assembly that contains a piezoelectric switch | Douglas Hogg | 2015-09-22 |
| D738882 | Touchless microwave switch | Henry L. Miszkiewicz, Garrett Y. Kaufman, R. Douglas Hogg | 2015-09-15 |
| D724588 | Smart card RFID reader | Henry L. Miszkiewicz, Garrett Y. Kaufman, R. Douglas Hogg | 2015-03-17 |
| 7063471 | Access control apparatus | Peter N. Kaufman, Garrett Y. Kaufman | 2006-06-20 |
| D491087 | Keypad | Peter N. Kaufman, Garrett Y. Kaufman | 2004-06-08 |
| D459671 | Keypad | Peter N. Kaufman, Garrett Y. Kaufman, Richard Foster | 2002-07-02 |
| 5674018 | Weatherproof electronic keypad with replaceable graphics overlay | Peter N. Kaufman, Henry L. Miszkiewicz | 1997-10-07 |
| 4636775 | Sensor for an alarm system | James P. Burgess, Thomas Walker | 1987-01-13 |
| 4490639 | Coupling circuit between high impedance piezoelectric signal source and utilizing circuit | Charles W. Staufenberg, Jr. | 1984-12-25 |
| 4458173 | Pressure sensitive electric signal generator | Peter N. Kaufman, John J. Sharkey | 1984-07-03 |