Patent US2274743A successfully refreshed from Google Patents.
Patent US2809257A successfully refreshed from Google Patents.
US2809257A
Expired / Lapsed
US
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Composite fuse links of silver and copper
Assignee: Chase Shawmut Co
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Filing: 1954-10-04
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Granted: 1957-10-08
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Expires: 1974-10-04
Abstract
No abstract record available.
Inventors
- 👤 Kenneth W Swain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:35
CPC Classifications
H; H01; H01H; H01H85/00; H01H85/02; H01H85/04; H01H85/05; H01H85/055; H01H85/06; H01H85/08; H01H85/10
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) | 1960-10-07 | 1961-04-08 | 1961-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-07 | 1965-04-08 | 1965-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-07 | 1969-04-08 | 1969-10-08 | $7700.00 | Window Closed / Lapsed |