US2642091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastic diaphragm
Assignee: Individual
•
Filing: 1947-12-19
•
Granted: 1953-06-16
•
Expires: 1967-12-19
Abstract
No abstract record available.
Inventors
- 👤 Morin Alexandre Henri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:30
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/063; G05D16/0644; G05D16/0655; F; F16; F16J; F16J3/00; F16J3/04; F16J3/041; F16K; F16K31/00; F16K31/12; F16K31/126; F16K31/1262; G01; G01L; G01L7/00; G01L7/02; G01L7/08; G01L7/082; G01L7/084
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US39238A
Cited
US88887A
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US1057196A
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US2088042A
Cited
US2178953A
Cited
US2291912A
Cited
US2323985A
Cited
US2372923A
Cited
US2387486A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-15 | 1956-12-15 | 1957-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-15 | 1960-12-15 | 1961-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-15 | 1964-12-15 | 1965-06-16 | $7700.00 | Window Closed / Lapsed |