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US3275746A
Expired / Lapsed
US
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Simultaneous multiple two-way multiplex communications systems
Assignee: Individual
•
Filing: 1963-02-19
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Granted: 1966-09-27
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Expires: 1983-02-19
Abstract
No abstract record available.
Inventors
- 👤 Beltrami Aurelio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:43
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/14; H04N7/141; H04J; H04J14/00; H04J14/08; H04N7/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2191565A
Cited
US2608617A
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US2730708A
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US2895005A
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US2934673A
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US2941074A
Cited
US3026417A
Cited
US3084222A
Cited
US3082293A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |