Patent US2519730A successfully refreshed from Google Patents.
US2519730A
Expired / Lapsed
US
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Vibrator spring leaf contact arrangement
Assignee: Duracell Inc USA
•
Filing: 1946-02-16
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Granted: 1950-08-22
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Expires: 1966-02-16
Abstract
No abstract record available.
Inventors
- 👤 Robert J Aust
- 👤 Huetten Clarence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:26
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/64; H01H50/74; H01H50/76
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB313784A
Cited
US2050665A
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US2007703A
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US2063311A
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US2120273A
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US2190685A
Cited
US2290725A
Cited
US2156487A
Cited
US2339973A
Cited
US2416736A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-21 | 1954-02-20 | 1954-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-21 | 1958-02-20 | 1958-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-21 | 1962-02-20 | 1962-08-22 | $7700.00 | Window Closed / Lapsed |