US2840339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diaphragm valves and diaphragms therefor
Assignee: Crane Process Flow Technologies Ltd
•
Filing: 1954-05-12
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Granted: 1958-06-24
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Expires: 1974-05-12
Abstract
No abstract record available.
Inventors
- 👤 Price Richard Hector
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:31
CPC Classifications
F; F16; F16K; F16K7/00; F16K7/12; F16K7/123; F16J; F16J3/00; F16J3/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB685935A
Cited
US1266324A
Cited
GB541828A
Cited
CH257508A
Cited
US2605991A
Cited
GB657324A
Cited
US2705124A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |