US3549236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical frequency discriminator with dual frequency resonator
Assignee: United States Department of the Army
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Filing: 1968-09-30
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Granted: 1970-12-22
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Expires: 1988-09-30
Abstract
No abstract record available.
Inventors
- 👤 James W Mink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:22
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/05; H01S3/08; G; G02; G02F; G02F1/00; G02F1/01; G02F1/03; G02F1/21
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3351761A
Cited
US3213393A
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US3324295A
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US3283261A
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US3314017A
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US3439975A
Cited
US3404353A
Cited
US3443858A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |