US3057978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermo-magnetic contact device
Assignee: Duracell Inc USA
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Filing: 1960-10-24
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Granted: 1962-10-09
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Expires: 1980-10-24
Abstract
No abstract record available.
Inventors
- 👤 Huetten Clarence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:56
CPC Classifications
H; H01; H01H; H01H37/00; H01H37/02; H01H37/32; H01H37/58
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2166498A
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US2214928A
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US2269162A
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FR904407A
Cited
GB600250A
Cited
US2437488A
Cited
US2663785A
Cited
US2718569A
Cited
US2751483A
Cited
US3009047A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-08 | 1966-04-09 | 1966-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-08 | 1970-04-09 | 1970-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-08 | 1974-04-09 | 1974-10-09 | $7700.00 | Window Closed / Lapsed |