Patent US2675467A successfully refreshed from Google Patents.
US2675467A
Expired / Lapsed
US
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Time controlled radio frequency preselection apparatus
Assignee: PHANTOM DIAL Co
•
Filing: 1949-03-09
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Granted: 1954-04-13
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Expires: 1969-03-09
Abstract
No abstract record available.
Inventors
- 👤 William D Gibbs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:06
CPC Classifications
G; G04; G04C; G04C23/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2029909A
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US1977330A
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US2068227A
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US2122779A
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US2201162A
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US2326930A
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US2342814A
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US2337568A
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US2332767A
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US2501274A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-12 | 1957-10-12 | 1958-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-12 | 1961-10-12 | 1962-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-12 | 1965-10-12 | 1966-04-13 | $7700.00 | Window Closed / Lapsed |