Patent US2150999A successfully refreshed from Google Patents.
US3441674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Time division multiplex channel pulse distributor
Assignee: TDK Micronas GmbH
•
Filing: 1965-07-29
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Granted: 1969-04-29
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Expires: 1985-07-29
Abstract
No abstract record available.
Inventors
- 👤 Ames F Giordano
- 👤 Walter H Caldwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:37
CPC Classifications
H; H04; H04J; H04J3/00; H04J3/16; H04J3/1605; H04J3/1623; H04J3/1647; H04J3/02; H04J3/04; H04J3/047
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3305639A
Cited
US3370128A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-28 | 1972-10-28 | 1973-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-28 | 1976-10-28 | 1977-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-28 | 1980-10-28 | 1981-04-29 | $7700.00 | Window Closed / Lapsed |