US3002137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage dependent ceramic capacitor
Assignee: Sprague Electric Co
•
Filing: 1957-09-04
•
Granted: 1961-09-26
•
Expires: 1977-09-04
Abstract
No abstract record available.
Inventors
- 👤 Kahn Manfred
- 👤 Glenn F Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:42
CPC Classifications
H; H01; H01G; H01G7/00; H01G7/06; Y; Y10; Y10T; Y10T29/00; Y10T29/43; Y10T29/435
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1906691A
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US2444255A
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GB619193A
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US2509758A
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US2673949A
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US2721822A
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US2758267A
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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) | 1964-09-25 | 1965-03-27 | 1965-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-25 | 1969-03-27 | 1969-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-25 | 1973-03-27 | 1973-09-26 | $7700.00 | Window Closed / Lapsed |