Patent US2920164A successfully refreshed from Google Patents.
US2920164A
Expired / Lapsed
US
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Protective systems including circuit interrupters and current-limiting fuses
Assignee: Chase Shawmut Co
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Filing: 1955-11-01
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Granted: 1960-01-05
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Expires: 1975-11-01
Abstract
No abstract record available.
Inventors
- 👤 William S Edsall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:03
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US815317A
Cited
US1294621A
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US1327777A
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US2140360A
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US2337495A
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US2337504A
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US2358215A
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US2416951A
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US2473196A
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US2483577A
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US2843702A
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US2824929A
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US2794095A
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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) | 1963-01-04 | 1963-07-06 | 1964-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-04 | 1967-07-06 | 1968-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-04 | 1971-07-06 | 1972-01-05 | $7700.00 | Window Closed / Lapsed |