US2756375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feed-through capacitors
Assignee: Sprague Electric Co
•
Filing: 1952-02-06
•
Granted: 1956-07-24
•
Expires: 1972-02-06
Abstract
No abstract record available.
Inventors
- 👤 David B Peck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:29
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/35
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1361328A
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US2348693A
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US2430433A
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FR899832A
Cited
US2444333A
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US2491681A
Cited
US2552306A
Cited
US2603675A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-24 | 1960-01-23 | 1960-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-24 | 1964-01-23 | 1964-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-24 | 1968-01-23 | 1968-07-24 | $7700.00 | Window Closed / Lapsed |