US2608801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: Individual
•
Filing: 1951-01-26
•
Granted: 1952-09-02
•
Expires: 1971-01-26
Abstract
No abstract record available.
Inventors
- 👤 Ian M Ridley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:42
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; F16K31/58; B; B24; B24C; B24C5/00; B24C5/02; B24C5/04; F16K15/00; F16K15/14; F16K15/144; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87571; Y10T137/87587; Y10T137/87611
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US992144A
Cited
US1073149A
Cited
GB285883A
Cited
US1927573A
Cited
US2059294A
Cited
US2121354A
Cited
US2405854A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-02 | 1956-03-03 | 1956-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-02 | 1960-03-03 | 1960-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-02 | 1964-03-03 | 1964-09-02 | $7700.00 | Window Closed / Lapsed |