US3416752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Correlation guidance system having multiple switchable field of view
Assignee: Lockheed Martin Corp
•
Filing: 1966-03-23
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Granted: 1968-12-17
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Expires: 1986-03-23
Abstract
No abstract record available.
Inventors
- 👤 Clyde R Hembree
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:46
CPC Classifications
F; F41; F41G; F41G7/00; F41G7/20; F41G7/22; F41G7/2213; F41G7/2226; F41G7/2253; F41G7/2273; F41G7/2293; G; G01; G01S; G01S3/00; G01S3/78; G01S3/781
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2120654A
Cited
US2427256A
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US2492353A
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US2884540A
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US3023318A
Cited
US3244060A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-17 | 1972-06-17 | 1972-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-17 | 1976-06-17 | 1976-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-17 | 1980-06-17 | 1980-12-17 | $7700.00 | Window Closed / Lapsed |