Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6943511 | Electronic industrial motor operator control system | — | 2005-09-13 |
| 6906307 | Fail safe one wire interface for optical emitter-detector photo-eye systems with diagnostics | — | 2005-06-14 |
| 6820483 | Electronic water solution level detector | — | 2004-11-23 |
| RE35235 | Method and apparatus for controlling refrigerant gas in a low pressure refrigeration system | — | 1996-05-14 |
| 5307643 | Method and apparatus for controlling refrigerant gas in a low pressure refrigeration system | — | 1994-05-03 |
| 5276392 | Single phase AC motor speed control system | — | 1994-01-04 |
| 5151638 | Motor overload indicating arrangement | — | 1992-09-29 |
| 5142822 | Safety arrangement for automatic door operator | — | 1992-09-01 |
| 4890004 | Emergency light control and battery charging system | — | 1989-12-26 |
| 4864829 | Method and apparatus for electronically pressure sealing and leak testing an idle centrifugal chiller system | Peter J. Manning, Joshua D. Costell | 1989-09-12 |
| 4802055 | Transient voltage surge suppressor | — | 1989-01-31 |
| 4591769 | Arrangement for controlling the speed of a DC motor | — | 1986-05-27 |
| 4408146 | Automatic door operator | — | 1983-10-04 |
| 4341170 | Pattern display arrangement for an electronically controlled sewing machine | Russell J. Pepe | 1982-07-27 |
| 4335667 | Pattern selection arrangement for a multiple pattern sewing machine | Charles Lee Mauro, Jr. | 1982-06-22 |
| 4329933 | Universal expansion module | Robert Sedlatschek | 1982-05-18 |
| 4323023 | Instructional flip plate informational system | Allan M. Dob | 1982-04-06 |
| 4315250 | Connection arrangement for selection and display system | John W. Wurst | 1982-02-09 |
| 4283659 | Display system utilizing incandescent lamp multiplexing | William S. N. Trimmer | 1981-08-11 |
| 4250495 | Touch sensitive control panel and a method of manufacture thereof | Allan M. Dob | 1981-02-10 |
| 4242976 | Precise positioner of buttonhole presser foot | Russell J. Pepe, Allan M. Dob | 1981-01-06 |
| 4242974 | Pattern feed elongation in electronic sewing machine | — | 1981-01-06 |
| 4216732 | Optical switching design for one step buttonholing | Walter H. W. Marsh, Allan M. Dob | 1980-08-12 |
| 4193363 | Lint minimization in sewing machine bobbin alarm | Allan M. Dob | 1980-03-18 |
| 4188901 | Low bobbin thread detection system | — | 1980-02-19 |