Patent US3535457A successfully refreshed from Google Patents.
US3535457A
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Time division multiplex system provided with bandwith multiplication feature
Assignee: Siemens AG
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Filing: 1966-05-09
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Granted: 1970-10-20
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Expires: 1986-05-09
Abstract
No abstract record available.
Inventors
- 👤 Werner Poschenrieder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:58
CPC Classifications
H; H04; H04J; H04J3/00; H04J3/16; H04J3/1605; H04J3/1623; H04J3/1647; H01; H01J; H01J1/00; H04Q; H04Q11/00; H04Q11/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2564419A
Cited
GB822297A
Cited
US3217106A
Cited
US3221102A
Cited
US3280265A
Cited
US3281537A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |