Patent US2978560A successfully refreshed from Google Patents.
US2978560A
Expired / Lapsed
US
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Interrupter unit for telescoping blade switch
Assignee: ITE Circuit Breaker Co
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Filing: 1958-03-20
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Granted: 1961-04-04
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Expires: 1978-03-20
Abstract
No abstract record available.
Inventors
- 👤 Arthur C Bates
- 👤 Robert C Crowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:39
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/02; H01H33/28; H01H33/30; H01H33/32; H01H33/04; H01H33/12; H01H33/121; H01H33/122
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1067735A
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DE607466C
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GB451431A
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DE638145C
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DE704181C
Cited
US2280321A
Cited
US2481996A
Cited
US2679567A
Cited
BE531567A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |