Patent US2686257A successfully refreshed from Google Patents.
US2686257A
Expired / Lapsed
US
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Radio telephone communication station
Assignee: AT&T Inc
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Filing: 1950-03-15
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Granted: 1954-08-10
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Expires: 1970-03-15
Abstract
No abstract record available.
Inventors
- 👤 Winfried E Reichle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:40
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/38; H04B1/40; H04B1/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1688454A
Cited
US2263755A
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US2265056A
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US2341224A
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US2383908A
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US2512613A
Cited
US2441570A
Cited
US2458558A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-09 | 1958-02-08 | 1958-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-09 | 1962-02-08 | 1962-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-09 | 1966-02-08 | 1966-08-10 | $7700.00 | Window Closed / Lapsed |