US2579470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selector system
Assignee: STC PLC
•
Filing: 1946-09-07
•
Granted: 1951-12-25
•
Expires: 1966-09-07
Abstract
No abstract record available.
Inventors
- 👤 Gilbert G Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:33
CPC Classifications
H; H04; H04W; H04W88/00; H04W88/18; H04W88/185; H04W88/188
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1608969A
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US1804526A
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US2231806A
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US2173154A
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US2124410A
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US2165800A
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US2325829A
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US2397088A
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US2321651A
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US2431167A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |