US3290610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastic traveling wave parametric amplifier
Assignee: AT&T Inc
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Filing: 1966-02-21
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Granted: 1966-12-06
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Expires: 1986-02-21
Abstract
No abstract record available.
Inventors
- 👤 Bert A Auld
- 👤 Matthews Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:53
CPC Classifications
H; H03; H03F; H03F7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
AN ELASTIC WAVE AMPLIFIER COMPRISING: AN ELEMENT OF NONCONDUCTIVE MAGNETIC MATERIAL; MEANS FOR LAUNCHING TWO TRANSVERSE ELASTIC WAVES WITHIN SAID ELEMENT FOR PROPAGATION THEREIN IN A GIVEN DIRECTION; SAID ELASTIC WAVES HAVING DIFFERENT FREQUENCIES AND BEING POLARIZED AT RIGHT ANGLES TO EACH OTHER AND TO SAID DIRECTION OF PROPAGATION; MEANS FOR APPLYING A STEADY MAGNETIC FIELD TO SAID MAGNETIC MATERIAL IN A DIRECTION PARALLEL TO THE DIRECTION OF POLARIZATION OF THE LOWER FREQUENCY WAVE; AND MEANS FOR EXTRACTING AMPLIFIED WAVE ENERGY AT SAID LOWER FREQUENCY FROM SAID ELEMENT.
Claim 2
Dependent Claim
88 words
AN ELASTIC WAVE AMPLIFIER COMPRISING: AN ELEMENT OF NONCONDUCTIVE MAGNETIC MATERIAL; MEANS FOR LAUNCHING TWO TRANSVERSE ELASTIC WAVES WITHIN SAID ELEMENT FOR PROPAGATION THEREIN IN A GIVEN DIRECTION; SAID ELASTIC WAVES HAVING DIFFERENT FREQUENCIES AND BEING POLARIZED AT RIGHT ANGLES TO EACH OTHER AND TO SAID DIRECTION OF PROPAGATION; MEANS FOR APPLYING A STEADY MAGNETIC FIELD TO SAID MAGNETIC MATERIAL IN A DIRECTION PARALLEL TO THE DIRECTION OF POLARIZATION OF THE LOWER FREQUENCY WAVE; AND MEANS FOR EXTRACTING AMPLIFIED WAVE ENERGY AT SAID LOWER FREQUENCY FROM SAID ELEMENT.
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) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |