Patent US2841032A successfully refreshed from Google Patents.
US2841032A
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Operating mechanisms for electric circuit control devices
Assignee: British Thomson Houston Co Ltd
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Filing: 1953-11-10
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Granted: 1958-07-01
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Expires: 1973-11-10
Abstract
No abstract record available.
Inventors
- 👤 Gimson Cyril Frederick
- 👤 Tattersall John Owen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:58
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/64; H01H50/645; H01H3/00; H01H3/32; H01H3/46; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18992; Y10T74/20; Y10T74/20576; Y10T74/20582; Y10T74/20588
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US322531A
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US486387A
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US523802A
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US638990A
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US689961A
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US695724A
Cited
GB502872A
Cited
GB502871A
Cited
US2168719A
Cited
US2621269A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |