US2652225A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locking stem adjustment valve
Assignee: Harper Wyman Co
•
Filing: 1948-11-23
•
Granted: 1953-09-15
•
Expires: 1968-11-23
Abstract
No abstract record available.
Inventors
- 👤 Vincent C Peterson
- 👤 Henry H Nadasdy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:18
CPC Classifications
F; F16; F16K; F16K35/00; F16K35/02; F16K35/027; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87265; Y10T137/87378; Y10T137/87386
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1714374A
Cited
US2035762A
Cited
CH178675A
Cited
GB468939A
Cited
US2161523A
Cited
US2257886A
Cited
US2262703A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-14 | 1957-03-16 | 1957-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-14 | 1961-03-16 | 1961-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-14 | 1965-03-16 | 1965-09-15 | $7700.00 | Window Closed / Lapsed |