US2546673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow control valve
Assignee: Individual
•
Filing: 1946-07-13
•
Granted: 1951-03-27
•
Expires: 1966-07-13
Abstract
No abstract record available.
Inventors
- 👤 Emory D Mattix
- 👤 Charles W Stokes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:59
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/01; G05D7/0173
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1635040A
Cited
US2424654A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-26 | 1954-09-25 | 1955-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-26 | 1958-09-25 | 1959-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-26 | 1962-09-25 | 1963-03-27 | $7700.00 | Window Closed / Lapsed |