Patent US2888025A successfully refreshed from Google Patents.
US2888025A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rupturable diaphragm valve
Assignee: Anderson Greenwood and Co
•
Filing: 1955-09-06
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Granted: 1959-05-26
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Expires: 1975-09-06
Abstract
No abstract record available.
Inventors
- 👤 Marvin H Greenwood
- 👤 Allister L Presnal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:01
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/14; F16K17/16; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1632; Y10T137/1789
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1779065A
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Cited
US1874356A
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US2120248A
Cited
US2737971A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-25 | 1962-11-24 | 1963-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-25 | 1966-11-24 | 1967-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-25 | 1970-11-24 | 1971-05-26 | $7700.00 | Window Closed / Lapsed |