US3361990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency stabilization apparatus for optical masers
Assignee: AT&T Inc
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Filing: 1964-06-22
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Granted: 1968-01-02
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Expires: 1984-06-22
Abstract
No abstract record available.
Inventors
- 👤 Eugene J Gordon
- 👤 Edward F Labuda
- 👤 Alan D White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:55
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/10; H01S3/13; H01S3/139; H01S3/1396
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
APPARATUS FOR DERIVING A DISCRIMINANT WHICH IS A MEASURE OF THE DIFFERENCE BETWEEN THE OUTPUT FREQUENCY OF A LASER AND A PREDETERMINED FREQUENCY WITHIN THE LASER EMISSION LINE COMPRISING IN COMBINATION FIRST MEANS FOR PARTIALLY ABSORBING A FIRST PORTION OF THE OUTPUT OF A LASER, SAID FIRST MEANS HAVING AN ABSORPTION PROFILE WITH A PEAK VALUE AT A FREQUENCY NEAR THE LASER EMISSION LINE AT A FREQUENCY LOWER THAN A PREDETERMINED FREQUENCY, SECOND MEANS FOR PARTIALLY ABSORB ING A SECOND PORTION OF THE OUTPUT OF THE LASER,
Claim 2
Dependent Claim
87 words
APPARATUS FOR DERIVING A DISCRIMINANT WHICH IS A MEASURE OF THE DIFFERENCE BETWEEN THE OUTPUT FREQUENCY OF A LASER AND A PREDETERMINED FREQUENCY WITHIN THE LASER EMISSION LINE COMPRISING IN COMBINATION FIRST MEANS FOR PARTIALLY ABSORBING A FIRST PORTION OF THE OUTPUT OF A LASER, SAID FIRST MEANS HAVING AN ABSORPTION PROFILE WITH A PEAK VALUE AT A FREQUENCY NEAR THE LASER EMISSION LINE AT A FREQUENCY LOWER THAN A PREDETERMINED FREQUENCY, SECOND MEANS FOR PARTIALLY ABSORB ING A SECOND PORTION OF THE OUTPUT OF THE LASER,
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-01 | 1971-07-03 | 1972-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-01 | 1975-07-03 | 1976-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-01 | 1979-07-03 | 1980-01-02 | $7700.00 | Window Closed / Lapsed |