US3413468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for improving the optical gain of an infrared detector
Assignee: Barnes Engineering Co
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Filing: 1966-02-14
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Granted: 1968-11-26
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Expires: 1986-02-14
Abstract
No abstract record available.
Inventors
- 👤 Robert W Astheimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:01
CPC Classifications
G; G01; G01J; G01J1/00; G01J1/02; G01J1/04; G01J1/0407; G01J1/0422; G01J5/00; G01J5/02; G01J5/08; G01J5/0801; G01J5/0802; G01J5/0808; G01J5/0815; H; H10; H10F; H10F77/00; H10F77/40; H10F77/413
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-26 | 1972-05-27 | 1972-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-26 | 1976-05-27 | 1976-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-26 | 1980-05-27 | 1980-11-26 | $7700.00 | Window Closed / Lapsed |