US2730131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible diaphragm for fuel pumps and the like and method of forming the same
Assignee: Crane Packing Co
•
Filing: 1953-01-02
•
Granted: 1956-01-10
•
Expires: 1973-01-02
Abstract
No abstract record available.
Inventors
- 👤 Howard L Asp
- 👤 Paul T Haake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:27
CPC Classifications
F; F16; F16J; F16J3/00; F16J3/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2033354A
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US2235872A
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US2304618A
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US2646077A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-09 | 1959-07-11 | 1960-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-09 | 1963-07-11 | 1964-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-09 | 1967-07-11 | 1968-01-10 | $7700.00 | Window Closed / Lapsed |