Patent US3452204A successfully refreshed from Google Patents.
US3452204A
Expired / Lapsed
US
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Low ohmic semiconductor tuned narrow bandpass barrier photodiode
Assignee: United States Department of the Air Force
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Filing: 1967-03-06
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Granted: 1969-06-24
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Expires: 1987-03-06
Abstract
No abstract record available.
Inventors
- 👤 John A Love
- 👤 John R Sizelove
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:36
CPC Classifications
H; H10; H10F; H10F30/00; H10F30/20; H10F30/21; H10F30/22; H10F30/227; Y; Y10; Y10S; Y10S148/00; Y10S148/12; Y10S148/139
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) | 1972-06-23 | 1972-12-23 | 1973-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-23 | 1976-12-23 | 1977-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-23 | 1980-12-23 | 1981-06-24 | $7700.00 | Window Closed / Lapsed |