Patent US4175935A successfully refreshed from Google Patents.
Patent US3780830A successfully refreshed from Google Patents.
Patent US4462032A successfully refreshed from Google Patents.
Patent US1455002A successfully refreshed from Google Patents.
Patent US2290547A successfully refreshed from Google Patents.
Patent US2652226A successfully refreshed from Google Patents.
US2652226A
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
- 👤 Norman M Huff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:29
CPC Classifications
F; F16; F16K; F16K35/00; F16K35/02; F16K35/027; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86718; Y10T137/86743; Y10T137/86751; Y10T137/87265; Y10T137/87378; Y10T137/87386; Y10T137/87539; Y10T137/87547
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
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 |