Patent US2640875A successfully refreshed from Google Patents.
US2640875A
Expired / Lapsed
US
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Facsimile telegraph transmitter
Assignee: International Standard Electric Corp
•
Filing: 1947-03-27
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Granted: 1953-06-02
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Expires: 1967-03-27
Abstract
No abstract record available.
Inventors
- 👤 Devaux Lucien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:28
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/32; H04N1/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2122974A
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US2147266A
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US2098802A
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US2108983A
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US2193675A
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US2255408A
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US2289948A
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US2345501A
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US2354571A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-01 | 1956-12-01 | 1957-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-01 | 1960-12-01 | 1961-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-01 | 1964-12-01 | 1965-06-02 | $7700.00 | Window Closed / Lapsed |