US2980392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination metering and shut-off valve
Assignee: Individual
•
Filing: 1957-08-27
•
Granted: 1961-04-18
•
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 20:58
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
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US45390A
Cited
US1619937A
Cited
US1804462A
Cited
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 |