US3555453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of lasers or the like
Assignee: LANSING RESEARCH CORP
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Filing: 1968-05-09
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Granted: 1971-01-12
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Expires: 1988-05-09
Abstract
Abstract A RESONATING DEVICE HAVING FRAME END MEMBERS BETWEEN WHICH A SERIES OF WAVES IS REFLECTED MOUNTED ON THE FRAME, SUCH AS A LASER, IS PROVIDED WITH MEANS RESPONSIVE TO RELATIVELY SMALL VARIATIONS IN THE LENGTH OF THE FRAME TO APPLY VOLTAGE TO A TRANSDUCER WHICH CARRIES ONE OF REFLECTING MEMBERS SO AS TO KEEP THE SPACING BETWEEN THE MEMBERS CONSTANT AT AN INTEGRAL MULTIPLE OF ONE-HALF THE WAVE LENGTH. GREATER VARIATIONS ACT TO APPLY A DIFFERENT VOLTAGE TO THE TRANSDUCER SUFFICIENT TO CAUSE IT TO SHIFT THE REFLECTING MEMBER BY HALF A WAVE LENGTH OR AN INTEGRAL NUMBER OF HALF-WAVE LENGTHS.
Inventors
- 👤 Raphael M Littauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:43
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/10; H01S3/13; H01S3/139
Claims Analysis
Total Claims: 0
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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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |