Patent US2013393A successfully refreshed from Google Patents.
Patent US3084872A successfully refreshed from Google Patents.
Patent US2596909A successfully refreshed from Google Patents.
US2596909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve device
Assignee: WEMAC CO
•
Filing: 1948-01-15
•
Granted: 1952-05-13
•
Expires: 1968-01-15
Abstract
No abstract record available.
Inventors
- 👤 Frank J Mufich
- 👤 Howard S Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:01
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/34; B60H1/3414; B60H1/3435; B60H1/3442; F; F16; F16K; F16K1/00; B64; B64D; B64D13/00; B64D2013/003
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US254048A
Cited
US1917216A
Cited
GB351050A
Cited
GB360727A
Cited
US1920840A
Cited
GB512169A
Cited
GB520452A
Cited
US2462989A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-13 | 1955-11-12 | 1956-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-13 | 1959-11-12 | 1960-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-13 | 1963-11-12 | 1964-05-13 | $7700.00 | Window Closed / Lapsed |