Patent US2636776A successfully refreshed from Google Patents.
US2636776A
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US
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Pressure operated device
Assignee: Antioch College
•
Filing: 1949-07-29
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Granted: 1953-04-28
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Expires: 1969-07-29
Abstract
No abstract record available.
Inventors
- 👤 Vernet Sergius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:50
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/01; G05D23/02; G05D23/021; G05D23/022; Y; Y10; Y10S; Y10S236/00; Y10S236/05; Y10S33/00; Y10S33/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1924888A
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US2115502A
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US2188342A
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GB531280A
Cited
US2201661A
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US2312332A
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US2307066A
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US2272304A
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US2324880A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-27 | 1956-10-27 | 1957-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-27 | 1960-10-27 | 1961-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-27 | 1964-10-27 | 1965-04-28 | $7700.00 | Window Closed / Lapsed |