Patent US4144435A successfully refreshed from Google Patents.
Patent US3132286A successfully refreshed from Google Patents.
US3132286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alternating current system for negative resistance loads
Assignee: Individual
•
Filing: 1960-05-23
•
Granted: 1964-05-05
•
Expires: 1980-05-23
Abstract
No abstract record available.
Inventors
- 👤 Jamison R Harrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:08
CPC Classifications
H; H05; H05B; H05B41/00; H05B41/14; H05B41/16; H05B41/20; H05B41/23; H05B41/232
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
ELECTRICAL APPARATUS COMPRISING MEANS FOR SUPPLYING ALTERNATING CURRENT OF GIVEN OPERATING FREQUENCY AND OPERATING VOLTAGE, A NEGATIVE RESISTANCE LOAD, A MECHANICALLY VIBRATING REACTIVE IMPEDANCE DEVICE, MEANS CONNECTING SAID LOAD AND SAID VIBRATING DEVICE IN SERIES TO SAID CURRENT SUPPLY MEANS, AND MEANS FOR TUNING SAID VIBRATING DEVICE TO A RESONANT FREQUENCY OUTSIDE SAID OPERATING FREQUENCY, WHEREBY SAID VIBRATING DEVICE CONSTITUTES AT SAID OPERATING FREQUENCY A DAMPENING REACTANCE.
Claim 2
Dependent Claim
67 words
ELECTRICAL APPARATUS COMPRISING MEANS FOR SUPPLYING ALTERNATING CURRENT OF GIVEN OPERATING FREQUENCY AND OPERATING VOLTAGE, A NEGATIVE RESISTANCE LOAD, A MECHANICALLY VIBRATING REACTIVE IMPEDANCE DEVICE, MEANS CONNECTING SAID LOAD AND SAID VIBRATING DEVICE IN SERIES TO SAID CURRENT SUPPLY MEANS, AND MEANS FOR TUNING SAID VIBRATING DEVICE TO A RESONANT FREQUENCY OUTSIDE SAID OPERATING FREQUENCY, WHEREBY SAID VIBRATING DEVICE CONSTITUTES AT SAID OPERATING FREQUENCY A DAMPENING REACTANCE.
References Cited (Backward Citations)
US2349012A
Cited
US2466053A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |