Patent US2916577A successfully refreshed from Google Patents.
US2916577A
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Fluid pressure responsive switch
Assignee: BOC Group Ltd
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Filing: 1958-05-06
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Granted: 1959-12-08
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Expires: 1978-05-06
Abstract
No abstract record available.
Inventors
- 👤 Smith David William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:22
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/063; G05D16/0638; G05D16/0641; H; H01; H01H; H01H35/00; H01H35/24; H01H35/26; H01H35/2607; H01H35/34; H01H35/346
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2371669A
Cited
US2350938A
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US2450961A
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US2537474A
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US2803724A
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US2786109A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-07 | 1963-06-08 | 1963-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-07 | 1967-06-08 | 1967-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-07 | 1971-06-08 | 1971-12-08 | $7700.00 | Window Closed / Lapsed |