Patent US3304473A successfully refreshed from Google Patents.
US3304473A
Expired / Lapsed
US
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Nonbursting electrical capacitor
Assignee: Sprague Electric Co
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Filing: 1963-11-12
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Granted: 1967-02-14
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Expires: 1983-11-12
Abstract
No abstract record available.
Inventors
- 👤 Paul H Netherwood
- 👤 Livingston L Rice
- 👤 David A Hynes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:41
CPC Classifications
H; H01; H01G; H01G2/00; H01G2/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |