Patent US2587356A successfully refreshed from Google Patents.
US2587356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversible valve structure
Assignee: Skinner Chuck Co
•
Filing: 1945-07-16
•
Granted: 1952-02-26
•
Expires: 1965-07-16
Abstract
No abstract record available.
Inventors
- 👤 Hal W Mcpherson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:09
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0675; F16K31/0679; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87096; Y10T137/87917
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US343642A
Cited
US570727A
Cited
US602548A
Cited
US1719105A
Cited
GB189609154A
Cited
US763054A
Cited
US896120A
Cited
US980260A
Cited
FR731300A
Cited
US2335312A
Cited
US2283369A
Cited
US2270259A
Cited
US2339353A
Cited
US2358828A
Cited
US2382664A
Cited
US2394105A
Cited
US2461772A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-25 | 1955-08-27 | 1956-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-25 | 1959-08-27 | 1960-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-25 | 1963-08-27 | 1964-02-26 | $7700.00 | Window Closed / Lapsed |