Patent US3433900A successfully refreshed from Google Patents.
US3433900A
Expired / Lapsed
US
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Centralized digit receiver system for a plurality of time multiplex communication systems
Assignee: Siemens AG
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Filing: 1965-09-17
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Granted: 1969-03-18
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Expires: 1985-09-17
Abstract
No abstract record available.
Inventors
- 👤 Max Schlichte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:25
CPC Classifications
B; B23; B23B; B23B47/00; B23B47/26; B23B39/00; B23B39/12; B23Q; B23Q5/00; B23Q5/22; B23Q5/34; B23Q5/36; H; H04; H04M; H04M3/00; H04M3/42; H04M3/58; H04Q; H04Q11/00; H04Q11/04; H04Q3/00; H04Q3/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-17 | 1972-09-16 | 1973-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-17 | 1976-09-16 | 1977-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-17 | 1980-09-16 | 1981-03-18 | $7700.00 | Window Closed / Lapsed |