Patent US2577531A successfully refreshed from Google Patents.
US2577531A
Expired / Lapsed
US
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Fuse construction
Assignee: ECONOMY FUSE AND MANUFACTURING Co
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Filing: 1948-04-14
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Granted: 1951-12-04
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Expires: 1968-04-14
Abstract
No abstract record available.
Inventors
- 👤 Gordon F Laing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:13
CPC Classifications
H; H01; H01H; H01H85/00; H01H85/02; H01H85/04; H01H85/05; H01H85/055
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1278893A
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US1278322A
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US1501018A
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US1539870A
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US2111749A
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GB439517A
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US2159423A
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US2157152A
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US2300620A
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US2224111A
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US2293953A
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US2321711A
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US2400491A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-03 | 1955-06-04 | 1955-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-03 | 1959-06-04 | 1959-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-03 | 1963-06-04 | 1963-12-04 | $7700.00 | Window Closed / Lapsed |