US2674646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealed electrical capacitor
Assignee: Duracell Inc USA
•
Filing: 1950-04-13
•
Granted: 1954-04-06
•
Expires: 1970-04-13
Abstract
No abstract record available.
Inventors
- 👤 Schoch Henry Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:54
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/224
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1637090A
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US1248593A
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US1763115A
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US2183550A
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US1924435A
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GB420809A
Cited
GB478582A
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US2211659A
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GB562413A
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US2444880A
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US2596134A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |