US3148331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tunnel diode converter utilizing two tunnel diodes
Assignee: RCA Corp
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Filing: 1960-12-07
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Granted: 1964-09-08
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Expires: 1980-12-07
Abstract
No abstract record available.
Inventors
- 👤 David J Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:18
CPC Classifications
H; H03; H03D; H03D7/00; H03D7/02; H03D7/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
AN ELECTRICAL CIRCUIT COMPRISING FIRST AND SECOND NEGATIVE RESISTANCE DEVICES, MEANS FOR BIASING SAID NEGATIVE RESISTANCE DEVICES TO EXHIBIT A NEGATIVE RESISTANCE, CIRCUIT MEANS COUPLED TO SAID NEGATIVE RESISTANCE DEVICES FOR APPLYING SIGNALS OF A DIFFERENT FIRST AND SECOND FREQUENCIES AND MEANS FOR COUPLING SAID FIRST NEGATICE RESISTANCE DEVICE TO SAID SECOND NEGATIVE RESISTANCE DEVICE SO THAT A SIGNAL WAVE OF SAID FIRST FREQUENCY CAUSES SAID DEVICES TO EXHIBIT A SUBSTANTIALLY DIFFERENT COMPOSITE CONDUCTANCE CHARACTERISTIC FROM THE COMPOSITE CONDUCTANCE CHARACTERISTIC EXHIBITED TO A SIGNAL WAVE OF SAID SECOND FREQUENCY.
Claim 2
Dependent Claim
89 words
AN ELECTRICAL CIRCUIT COMPRISING FIRST AND SECOND NEGATIVE RESISTANCE DEVICES, MEANS FOR BIASING SAID NEGATIVE RESISTANCE DEVICES TO EXHIBIT A NEGATIVE RESISTANCE, CIRCUIT MEANS COUPLED TO SAID NEGATIVE RESISTANCE DEVICES FOR APPLYING SIGNALS OF A DIFFERENT FIRST AND SECOND FREQUENCIES AND MEANS FOR COUPLING SAID FIRST NEGATICE RESISTANCE DEVICE TO SAID SECOND NEGATIVE RESISTANCE DEVICE SO THAT A SIGNAL WAVE OF SAID FIRST FREQUENCY CAUSES SAID DEVICES TO EXHIBIT A SUBSTANTIALLY DIFFERENT COMPOSITE CONDUCTANCE CHARACTERISTIC FROM THE COMPOSITE CONDUCTANCE CHARACTERISTIC EXHIBITED TO A SIGNAL WAVE OF SAID SECOND FREQUENCY.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |