US2930987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal translation system
Assignee: TDK Micronas GmbH
•
Filing: 1955-05-23
•
Granted: 1960-03-29
•
Expires: 1975-05-23
Abstract
No abstract record available.
Inventors
- 👤 John C Groce
- 👤 Jr John K Bates
- 👤 Duncan G Hunt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:09
CPC Classifications
H; H03; H03G; H03G3/00; H03G3/20; H03G3/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2084115A
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US2244695A
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US2295410A
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US2480195A
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US2519359A
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US2639423A
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US2492363A
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US2592308A
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US2600051A
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US2700074A
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US2835746A
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US2723387A
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US2866015A
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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) | 1963-03-29 | 1963-09-28 | 1964-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-29 | 1967-09-28 | 1968-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-29 | 1971-09-28 | 1972-03-29 | $7700.00 | Window Closed / Lapsed |