US2827077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow control valve
Assignee: John E Mitchell Co
•
Filing: 1956-01-16
•
Granted: 1958-03-18
•
Expires: 1976-01-16
Abstract
No abstract record available.
Inventors
- 👤 Mitchell Orville
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:52
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/01; G05D7/0106; F; F25; F25B; F25B41/00; F25B41/20; F25B41/22; Y; Y10; Y10S; Y10S277/00; Y10S277/916; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7835; Y10T137/7836
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2333401A
Cited
US2392178A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-17 | 1961-09-16 | 1962-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-17 | 1965-09-16 | 1966-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-17 | 1969-09-16 | 1970-03-18 | $7700.00 | Window Closed / Lapsed |