US2628638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow valve control
Assignee: Individual
•
Filing: 1946-03-01
•
Granted: 1953-02-17
•
Expires: 1966-03-01
Abstract
No abstract record available.
Inventors
- 👤 Newton S Herod
- 👤 Louis R O'neill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:33
CPC Classifications
F; F16; F16K; F16K41/00; F16K41/10; F16K1/00; F16K1/32; F16K1/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1439444A
Cited
US1577714A
Cited
US1698826A
Cited
US1886159A
Cited
US1802093A
Cited
US1921895A
Cited
US2051307A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-17 | 1956-08-18 | 1957-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-17 | 1960-08-18 | 1961-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-17 | 1964-08-18 | 1965-02-17 | $7700.00 | Window Closed / Lapsed |