US2948504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diaphragm valves
Assignee: Individual
•
Filing: 1955-11-29
•
Granted: 1960-08-09
•
Expires: 1975-11-29
Abstract
No abstract record available.
Inventors
- 👤 Merrill Ian Nuttall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:34
CPC Classifications
F; F16; F16K; F16K7/00; F16K7/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2397373A
Cited
US2381544A
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US2519642A
Cited
GB623696A
Cited
US2583572A
Cited
US2584577A
Cited
FR1023320A
Cited
US2620815A
Cited
US2784934A
Cited
US2812154A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |