Patent US2802208A successfully refreshed from Google Patents.
US2802208A
Expired / Lapsed
US
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Radio frequency multiplexing
Assignee: Individual
•
Filing: 1952-06-25
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Granted: 1957-08-06
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Expires: 1972-06-25
Abstract
No abstract record available.
Inventors
- 👤 Charles F Hobbs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:38
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/68
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1403841A
Cited
US1721492A
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US1797284A
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US1724922A
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US1742902A
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US1802760A
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US2164032A
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US2067353A
Cited
US2155821A
Cited
US2388906A
Cited
US2476162A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-05 | 1961-02-04 | 1961-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-05 | 1965-02-04 | 1965-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-05 | 1969-02-04 | 1969-08-06 | $7700.00 | Window Closed / Lapsed |