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Patent applications and USPTO patent grants for Pfeifer; John E..The latest application filed is for "charge controller for dc-dc power conversion".
Patent | Date |
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Charge Controller for DC-DC Power Conversion App 20080111517 - Pfeifer; John E. ;   et al. | 2008-05-15 |
Power takeoff and lighting unit for fluorescent fixture Grant 5,716,128 - Clark , et al. February 10, 1 | 1998-02-10 |
Portable sensor for detecting bends of the back of a person past a predetermined lumbosacral angle Grant 5,398,019 - Barnett , et al. March 14, 1 | 1995-03-14 |
Touch-responsive portable intrusion alarm Grant 4,091,371 - Mason, Jr. , et al. May 23, 1 | 1978-05-23 |
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