US2575714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Facsimile system
Assignee: Westinghouse Electric Corp
•
Filing: 1947-09-19
•
Granted: 1951-11-20
•
Expires: 1967-09-19
Abstract
No abstract record available.
Inventors
- 👤 John L Johnson
- 👤 John R Boykin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:09
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/46; H04N1/50; H04N1/506
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1776097A
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US2079970A
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US2272638A
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US2209183A
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US2185139A
Cited
US2278940A
Cited
US2415450A
Cited
US2431360A
Cited
US2461515A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-19 | 1955-05-21 | 1955-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-19 | 1959-05-21 | 1959-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-19 | 1963-05-21 | 1963-11-20 | $7700.00 | Window Closed / Lapsed |