Patent US2477647A successfully refreshed from Google Patents.
US2477647A
Expired / Lapsed
US
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Antenna
Assignee: STC PLC
•
Filing: 1945-01-29
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Granted: 1949-08-02
•
Expires: 1965-01-29
Abstract
No abstract record available.
Inventors
- 👤 Sidney B Pickles
- 👤 Anthony M Casabona
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:14
CPC Classifications
H; H01; H01Q; H01Q19/00; H01Q19/02; H01Q19/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1927393A
Cited
GB416296A
Cited
US2183784A
Cited
US2086976A
Cited
US2187014A
Cited
US2287220A
Cited
US2298449A
Cited
US2341558A
Cited
US2338564A
Cited
US2352977A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-01 | 1953-01-31 | 1953-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-01 | 1957-01-31 | 1957-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-01 | 1961-01-31 | 1961-08-02 | $7700.00 | Window Closed / Lapsed |