Patent US3537027A successfully refreshed from Google Patents.
US3537027A
Expired / Lapsed
US
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Frequency-stabilized single mode ring lasers
Assignee: AT&T Inc
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Filing: 1967-07-27
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Granted: 1970-10-27
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Expires: 1987-07-27
Abstract
No abstract record available.
Inventors
- 👤 Peter W Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:43
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/05; H01S3/08; H01S3/081; H01S3/083; H01S3/10; H01S3/13; H01S3/139; H01S3/1396
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3187270A
Cited
US3134837A
Cited
US3277392A
Cited
US3395367A
Cited
US3382758A
Cited
US3395365A
Cited
US3411849A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-26 | 1974-04-27 | 1974-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-26 | 1978-04-27 | 1978-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-26 | 1982-04-27 | 1982-10-27 | $7700.00 | Window Closed / Lapsed |