US2980140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid mixing valve structure
Assignee: Individual
•
Filing: 1958-05-06
•
Granted: 1961-04-18
•
Expires: 1978-05-06
Abstract
No abstract record available.
Inventors
- 👤 Charles D Mcmillan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:47
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/10; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87096; Y10T137/87571; Y10T137/87676; Y10T137/87684; Y10T137/87692; Y10T74/00; Y10T74/20; Y10T74/20012; Y10T74/20189; Y10T74/20195
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1460931A
Cited
US2323859A
Cited
US2529781A
Cited
US2573888A
Cited
US2667889A
Cited
DE927488C
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 |