Patent US3475703A successfully refreshed from Google Patents.
US3475703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coarse step-fine tune automatically tunable antenna
Assignee: Collins Radio Co
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Filing: 1967-12-11
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Granted: 1969-10-28
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Expires: 1987-12-11
Abstract
No abstract record available.
Inventors
- 👤 William A Kennedy
- 👤 Fred W Hardaway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:15
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/38; H03H7/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2884632A
Cited
US2886752A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |