US3471720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power amplifier
Assignee: General Electric Co
•
Filing: 1966-04-27
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Granted: 1969-10-07
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Expires: 1986-04-27
Abstract
No abstract record available.
Inventors
- 👤 Richard Rishel Radnor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:33
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/20; H03F3/21; H03F3/217; H03F9/00; H03F9/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A POWER AMPLIFIER COMPRISING: (A) MEANS FOR PROVIDING AN A-C POWER INPUT; (B) A SET OF FOUR POWER TRANSISTOR, (1) TWO OF SAID TRANSISTORS BEING ADAPTED TO APPLY RESPECTIVE LINES OF SAID POWER SUPPLY MEANS TO A FIRST LOAD TERMINAL; (2) THE REMAINING TWO TRANSISTORS BEING ADAPTED TO APPLY RESPECTIVE LINES OF SAID POWER TO A SECAND LOAD TERMINAL, WHEREBY PHASE REVERSAL IS PERMITTED; (C) A SET OF FOUR PULSE GENERATORS FOR SELECTIVELY OPERATING SAID TRANSISTORS IN AN ON CONDITION FOR A VARIABLE TIME DURATION EQUAL TO THE DURATION OF INPUT CONTROL PULSES; (D) A SET OF FOUR SATURABLE TRANSFORMERS FOR GENERATING SAID CONTROL PULSES;
Claim 2
Dependent Claim
105 words
A POWER AMPLIFIER COMPRISING: (A) MEANS FOR PROVIDING AN A-C POWER INPUT; (B) A SET OF FOUR POWER TRANSISTOR, (1) TWO OF SAID TRANSISTORS BEING ADAPTED TO APPLY RESPECTIVE LINES OF SAID POWER SUPPLY MEANS TO A FIRST LOAD TERMINAL; (2) THE REMAINING TWO TRANSISTORS BEING ADAPTED TO APPLY RESPECTIVE LINES OF SAID POWER TO A SECAND LOAD TERMINAL, WHEREBY PHASE REVERSAL IS PERMITTED; (C) A SET OF FOUR PULSE GENERATORS FOR SELECTIVELY OPERATING SAID TRANSISTORS IN AN ON CONDITION FOR A VARIABLE TIME DURATION EQUAL TO THE DURATION OF INPUT CONTROL PULSES; (D) A SET OF FOUR SATURABLE TRANSFORMERS FOR GENERATING SAID CONTROL PULSES;
References Cited (Backward Citations)
US2956222A
Cited
US3238445A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |