US3051791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiplexing means
Assignee: Epsco Inc
•
Filing: 1957-02-28
•
Granted: 1962-08-28
•
Expires: 1977-02-28
Abstract
No abstract record available.
Inventors
- 👤 Young Frink Mansfield
- 👤 Evan T Colton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:11
CPC Classifications
H; H04; H04J; H04J3/00; H04J3/02; H04J3/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2580421A
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US2438908A
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US2629857A
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US2539623A
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US2521733A
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US2643293A
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US2724740A
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US2658997A
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US2902542A
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US2839619A
Cited
US2870259A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |