Patent US3431787A successfully refreshed from Google Patents.
US3431787A
Expired / Lapsed
US
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Electronic tuning apparatus
Assignee: Lanteris Space LLC
•
Filing: 1965-03-17
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Granted: 1969-03-11
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Expires: 1985-03-17
Abstract
No abstract record available.
Inventors
- 👤 Edward Frank
- 👤 Ralph Bray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:36
CPC Classifications
H; H03; H03J; H03J5/00; H03J5/02; H03J5/04; H03J5/12; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18992
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA486759A
Cited
US2875620A
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US1925976A
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US2344091A
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US2512258A
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US2534768A
Cited
US2924101A
Cited
US3163837A
Cited
US3251012A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-10 | 1972-09-09 | 1973-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-10 | 1976-09-09 | 1977-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-10 | 1980-09-09 | 1981-03-11 | $7700.00 | Window Closed / Lapsed |