US2738159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: Specialties Development Corp
•
Filing: 1951-06-30
•
Granted: 1956-03-13
•
Expires: 1971-06-30
Abstract
No abstract record available.
Inventors
- 👤 William T Fleming
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:53
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/32; F16K1/34; F16K1/36; F16K1/38; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86348
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1899154A
Cited
US1971013A
Cited
US2057150A
Cited
US2073112A
Cited
US2105487A
Cited
US2299073A
Cited
US2510861A
Cited
US2548750A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-13 | 1959-09-12 | 1960-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-13 | 1963-09-12 | 1964-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-13 | 1967-09-12 | 1968-03-13 | $7700.00 | Window Closed / Lapsed |