US2470566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid control valve mechanism
Assignee: Hartford Empire Co
•
Filing: 1946-11-30
•
Granted: 1949-05-17
•
Expires: 1966-11-30
Abstract
No abstract record available.
Inventors
- 👤 Jr Hugh C Macconnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:41
CPC Classifications
F; F01; F01B; F01B17/00; F01B17/02; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86389; Y10T137/86405
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US287877A
Cited
US294650A
Cited
US1965867A
Cited
US2055530A
Cited
US2172981A
Cited
US2436424A
Cited
US2416933A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-16 | 1952-11-15 | 1953-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-16 | 1956-11-15 | 1957-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-16 | 1960-11-15 | 1961-05-17 | $7700.00 | Window Closed / Lapsed |