Patent US3243722A successfully refreshed from Google Patents.
US3243722A
Expired / Lapsed
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Maser frequency control systems using refractive index change
Assignee: Baird Atomic Inc
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Filing: 1961-08-28
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Granted: 1966-03-29
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Expires: 1981-08-28
Abstract
No abstract record available.
Inventors
- 👤 Bruce H Billings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:35
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/10; H01S3/13; H01S3/139; H01S3/105
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A SYSTEM COMPRISING A MASER UNIT HAVING A NEGATIVE TEMPERATURE MEDIUM AND A TUNING MEDIUM IN SERIES, PUMPING MEANS FOR SAID NEGATIVE TEMPERATURE MEDIUM, FIRST FABRY-PEROT MEANS PRESENTING REFLECTIVE SURFACES AT THE OPPOSITE EXTREMITIES OF SAID SERIES, AT LEAST ONE OF SAID REFLECTIVE SURFACES BEING PARTIALLY TRANSPARENT, CONTROL MEANS FOR VARYING THE INDEX OF REFRACTION OF SAID TUNING MEDIUM, AND TRANSDUCER MEANS INCLUDING SECOND FABRY-PEROT MEANS RESPONSIVE TO A PROPORTION OF RADIATION EMITTED FROM SAID NEGATIVE TEMPERATURE MEANS TO OPERATE SAID CONTROL MEANS, SAID TRANSDUCER MEANS INCLUDING MEANS FOR DIRECTING RADIATION FROM SAID FIRST FABRY-PEROT MEANS TO SAID SECOND FABRY-PEROT MEANS, MEANS FOR PRODUCING A SIGNAL IN RESPONSE TO SAID RADIATION RECEIVED BY SAID SECOND FABRY-PEROT MEANS AND MEANS FOR APPLYING SAID SIGNAL TO SAID CONTROL MEANS.
Claim 2
Independent Claim
127 words
A SYSTEM COMPRISING A MASER UNIT HAVING A NEGATIVE TEMPERATURE MEDIUM AND A TUNING MEDIUM IN SERIES, PUMPING MEANS FOR SAID NEGATIVE TEMPERATURE MEDIUM, FIRST FABRY-PEROT MEANS PRESENTING REFLECTIVE SURFACES AT THE OPPOSITE EXTREMITIES OF SAID SERIES, AT LEAST ONE OF SAID REFLECTIVE SURFACES BEING PARTIALLY TRANSPARENT, CONTROL MEANS FOR VARYING THE INDEX OF REFRACTION OF SAID TUNING MEDIUM, AND TRANSDUCER MEANS INCLUDING SECOND FABRY-PEROT MEANS RESPONSIVE TO A PROPORTION OF RADIATION EMITTED FROM SAID NEGATIVE TEMPERATURE MEANS TO OPERATE SAID CONTROL MEANS, SAID TRANSDUCER MEANS INCLUDING MEANS FOR DIRECTING RADIATION FROM SAID FIRST FABRY-PEROT MEANS TO SAID SECOND FABRY-PEROT MEANS, MEANS FOR PRODUCING A SIGNAL IN RESPONSE TO SAID RADIATION RECEIVED BY SAID SECOND FABRY-PEROT MEANS AND MEANS FOR APPLYING SAID SIGNAL TO SAID CONTROL MEANS.
References Cited (Backward Citations)
GB342219A
Cited
US2929922A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |