US2513910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiplex telegraph system
Assignee: RCA Corp
•
Filing: 1945-03-28
•
Granted: 1950-07-04
•
Expires: 1965-03-28
Abstract
No abstract record available.
Inventors
- 👤 Warren H Bliss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:41
CPC Classifications
H; H04; H04L; H04L5/00; H04L5/22; H04J; H04J3/00; H04J3/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1979484A
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US2025190A
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US2048081A
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US2070418A
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US2172354A
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US2158285A
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US2262838A
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US2352634A
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US2324314A
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US2429608A
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US2376395A
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US2369662A
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US2428366A
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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) | 1953-07-03 | 1954-01-02 | 1954-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-03 | 1958-01-02 | 1958-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-03 | 1962-01-02 | 1962-07-04 | $7700.00 | Window Closed / Lapsed |