US3426209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light responsive variable capacitor
Assignee: Texas Instruments Inc
•
Filing: 1967-09-11
•
Granted: 1969-02-04
•
Expires: 1987-09-11
Abstract
No abstract record available.
Inventors
- 👤 Yro T Sihvonen
- 👤 David R Boyd
- 👤 Earle L Kitts Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:04
CPC Classifications
H; H01; H01G; H01G7/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2837660A
Cited
US2837661A
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US2277013A
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US3244891A
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US3112404A
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US2912592A
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US3283194A
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US2870338A
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US2985757A
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US3069551A
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US3194967A
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US3198012A
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US3229105A
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US3248550A
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US3315080A
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US3273033A
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US3295002A
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US3315111A
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US3344280A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-04 | 1972-08-05 | 1973-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-04 | 1976-08-05 | 1977-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-04 | 1980-08-05 | 1981-02-04 | $7700.00 | Window Closed / Lapsed |