US2861257A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power line relaying
Assignee: TDK Micronas GmbH
•
Filing: 1953-09-22
•
Granted: 1958-11-18
•
Expires: 1973-09-22
Abstract
No abstract record available.
Inventors
- 👤 Weintraub Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:07
CPC Classifications
H; H04; H04J; H04J3/00; H04J3/02; H04J3/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2229097A
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US2258654A
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US2307771A
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US2643369A
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US2602852A
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US2522130A
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US2553910A
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US2677122A
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US2592737A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-17 | 1962-05-19 | 1962-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-17 | 1966-05-19 | 1966-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-17 | 1970-05-19 | 1970-11-18 | $7700.00 | Window Closed / Lapsed |