US2575775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diaphragm valve
Assignee: Individual
•
Filing: 1945-09-04
•
Granted: 1951-11-20
•
Expires: 1965-09-04
Abstract
No abstract record available.
Inventors
- 👤 Wilbur O Teeters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:03
CPC Classifications
F; F16; F16K; F16K41/00; F16K41/10; F16K41/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US167010A
Cited
GB189512619A
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US679062A
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US877875A
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US1067102A
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US1672575A
Cited
US1893380A
Cited
US1977015A
Cited
US2061028A
Cited
US2306291A
Cited
US2316506A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-19 | 1955-05-21 | 1955-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-19 | 1959-05-21 | 1959-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-19 | 1963-05-21 | 1963-11-20 | $7700.00 | Window Closed / Lapsed |