| 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 |