US3463924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Opposite circularly-polarized optical heterodyne detection system
Assignee: Lockheed Martin Corp
•
Filing: 1966-12-16
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Granted: 1969-08-26
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Expires: 1986-12-16
Abstract
No abstract record available.
Inventors
- 👤 William Culshaw
- 👤 John A Dahlquist
- 👤 Don G Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:39
CPC Classifications
G; G02; G02F; G02F2/00; G02F2/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3258597A
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US2385086A
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US3175088A
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US3170122A
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US3277396A
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US3231741A
Cited
US3302027A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-25 | 1973-02-24 | 1973-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-25 | 1977-02-24 | 1977-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-25 | 1981-02-24 | 1981-08-26 | $7700.00 | Window Closed / Lapsed |