US2590656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety valve
Assignee: Merck and Co Inc
•
Filing: 1949-01-22
•
Granted: 1952-03-25
•
Expires: 1969-01-22
Abstract
No abstract record available.
Inventors
- 👤 Verne H Schnebel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:15
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/04; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7923; Y10T137/7929; Y10T137/7932
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US182815A
Cited
US590195A
Cited
US1360160A
Cited
US1961758A
Cited
DE614351C
Cited
GB527917A
Cited
US2269404A
Cited
US2440608A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-25 | 1955-09-24 | 1956-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-25 | 1959-09-24 | 1960-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-25 | 1963-09-24 | 1964-03-25 | $7700.00 | Window Closed / Lapsed |