US2556780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixing valve
Assignee: Individual
•
Filing: 1948-01-10
•
Granted: 1951-06-12
•
Expires: 1968-01-10
Abstract
No abstract record available.
Inventors
- 👤 John M Shryock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:07
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/04; F16K11/056; F16K11/0565; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86549; Y10T137/86815
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US804913A
Cited
US1511080A
Cited
US1943865A
Cited
US1945645A
Cited
US2025440A
Cited
US2416582A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-11 | 1954-12-11 | 1955-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-11 | 1958-12-11 | 1959-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-11 | 1962-12-11 | 1963-06-12 | $7700.00 | Window Closed / Lapsed |