US2518790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plug valve
Assignee: Flowserve Corp
•
Filing: 1945-01-05
•
Granted: 1950-08-15
•
Expires: 1965-01-05
Abstract
No abstract record available.
Inventors
- 👤 Jacobsen Oystein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:49
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/08; F16K5/22; F16K5/222; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4358; Y10T137/4365; Y10T137/4435
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US144735A
Cited
US2171590A
Cited
GB256098A
Cited
US1784573A
Cited
US2038885A
Cited
US2048384A
Cited
GB499703A
Cited
US2168903A
Cited
US2269886A
Cited
US2281697A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-14 | 1954-02-13 | 1954-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-14 | 1958-02-13 | 1958-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-14 | 1962-02-13 | 1962-08-15 | $7700.00 | Window Closed / Lapsed |