Patent US5226880A successfully refreshed from Google Patents.
Patent US2980392A successfully refreshed from Google Patents.
US2980392A
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Combination metering and shut-off valve
Assignee: Individual
•
Filing: 1957-08-27
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Granted: 1961-04-18
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Expires: 1977-08-27
Abstract
No abstract record available.
Inventors
- 👤 Eugene C Greenwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:28
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/32; F16K1/52; F16K1/54; Y; Y10; Y10S; Y10S137/00; Y10S137/903; Y10S251/00; Y10S251/903
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1619937A
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US1804462A
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US2014314A
Cited
US2013822A
Cited
US2007051A
Cited
US2556308A
Cited
GB621142A
Cited
US2659568A
Cited
US2574851A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |