Patent US3546641A successfully refreshed from Google Patents.
US3546641A
Expired / Lapsed
US
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Electric circuit breakers
Assignee: Associated Electrical Industries Ltd
•
Filing: 1968-02-23
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Granted: 1970-12-08
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Expires: 1988-02-23
Abstract
No abstract record available.
Inventors
- 👤 Alan Twemlow Freeman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:27
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/12; H01H71/42; H01H71/43; H01H3/00; H01H3/22; H01H3/222; H01H71/50; H01H3/02; H01H3/0253
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1818801A
Cited
FR740568A
Cited
US2486104A
Cited
US3127488A
Cited
US3215798A
Cited
US3178533A
Cited
US3384845A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-07 | 1974-06-08 | 1974-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-07 | 1978-06-08 | 1978-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-07 | 1982-06-08 | 1982-12-08 | $7700.00 | Window Closed / Lapsed |