US2665875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve construction
Assignee: EDWARD VALVES Inc
•
Filing: 1946-04-15
•
Granted: 1954-01-12
•
Expires: 1966-04-15
Abstract
No abstract record available.
Inventors
- 👤 Macgregor David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:14
CPC Classifications
F; F16; F16K; F16K27/00; F16K27/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US849837A
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US1508102A
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US1722623A
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US1863122A
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US1863712A
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US2092182A
Cited
US2321597A
Cited
US2305589A
Cited
US2305590A
Cited
US2396469A
Cited
US2443187A
Cited
US2424449A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-11 | 1957-07-13 | 1958-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-11 | 1961-07-13 | 1962-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-11 | 1965-07-13 | 1966-01-12 | $7700.00 | Window Closed / Lapsed |