US2815486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical signal translating system
Assignee: TDK Micronas GmbH
•
Filing: 1952-05-22
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Granted: 1957-12-03
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Expires: 1972-05-22
Abstract
No abstract record available.
Inventors
- 👤 Charles L Estes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:51
CPC Classifications
H; H03; H03M; H03M7/00; H03M7/14; H03M7/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2199634A
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US2263633A
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US2404307A
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US2371397A
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US2484352A
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US2538615A
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US2571680A
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US2601354A
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US2693525A
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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) | 1960-12-02 | 1961-06-03 | 1961-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-02 | 1965-06-03 | 1965-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-02 | 1969-06-03 | 1969-12-03 | $7700.00 | Window Closed / Lapsed |