US2980776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric control device
Assignee: TANN CORP
•
Filing: 1957-04-29
•
Granted: 1961-04-18
•
Expires: 1977-04-29
Abstract
No abstract record available.
Inventors
- 👤 Stanford R Ovshinsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:56
CPC Classifications
H; H01; H01H; H01H67/00; H01H67/02; H01H3/00; H01H3/004; H01H51/00; H01H51/28; H01H51/288; H01H59/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US767599A
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US2339063A
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US2715166A
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US2794178A
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US2859297A
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US2802078A
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US2833882A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |