US2530722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic valve actuating control system
Assignee: Crane Co
•
Filing: 1946-05-02
•
Granted: 1950-11-21
•
Expires: 1966-05-02
Abstract
No abstract record available.
Inventors
- 👤 Eugene C Petrie
- 👤 Trefil James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:25
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/20; F16K17/22; F16K17/32; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2544; Y10T137/2554; Y10T137/5762; Y10T137/6851; Y10T137/6966; Y10T137/6991; Y10T137/7025; Y10T137/7722; Y10T137/7723; Y10T137/7781; Y10T137/7784; Y10T137/7785; Y10T137/7793; Y10T137/7805; Y10T137/7806; Y10T137/794; Y10T137/7976; Y10T137/8158; Y10T137/8326
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1893462A
Cited
US2381447A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-20 | 1954-05-22 | 1954-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-20 | 1958-05-22 | 1958-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-20 | 1962-05-22 | 1962-11-21 | $7700.00 | Window Closed / Lapsed |