US2977535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic digital evaluator
Assignee: TDK Micronas GmbH
•
Filing: 1958-08-20
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Granted: 1961-03-28
•
Expires: 1978-08-20
Abstract
No abstract record available.
Inventors
- 👤 David T O'connor
- 👤 Robert A Fabish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:37
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/28; G01R31/2832; G01R31/2834; H; H03; H03F; H03F2200/00; H03F2200/261
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2798199A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-27 | 1964-09-26 | 1965-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-27 | 1968-09-26 | 1969-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-27 | 1972-09-26 | 1973-03-28 | $7700.00 | Window Closed / Lapsed |