US2643664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow dividing valve
Assignee: Individual
•
Filing: 1948-10-20
•
Granted: 1953-06-30
•
Expires: 1968-10-20
Abstract
No abstract record available.
Inventors
- 👤 Warren P Willett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:24
CPC Classifications
G; G05; G05D; G05D11/00; G05D11/006; F; F15; F15B; F15B13/00; F15B13/02; F15B13/022; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2521; Y10T137/2524
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2466485A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-29 | 1956-12-29 | 1957-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-29 | 1960-12-29 | 1961-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-29 | 1964-12-29 | 1965-06-30 | $7700.00 | Window Closed / Lapsed |