US2628637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective type operator for multiple valve assemblies
Assignee: SELLERS INJECTOR Corp
•
Filing: 1949-06-01
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Granted: 1953-02-17
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Expires: 1969-06-01
Abstract
No abstract record available.
Inventors
- 👤 Irenee P Pedrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:17
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; F16K31/52; F16K31/524; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8225; Y10T137/8259; Y10T137/8593; Y10T137/86911; Y10T137/86928; Y10T137/87016; Y10T137/87024; Y10T137/87048; Y10T137/87153; Y10T137/87161; Y10T74/00; Y10T74/20; Y10T74/20207; Y10T74/20238; Y10T74/2025; Y10T74/20576; Y10T74/20636; Y10T74/20714; Y10T74/2072
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1590226A
Cited
DE673823C
Cited
US2363235A
Cited
US2431944A
Cited
US2453707A
Cited
US2460011A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-17 | 1956-08-18 | 1957-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-17 | 1960-08-18 | 1961-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-17 | 1964-08-18 | 1965-02-17 | $7700.00 | Window Closed / Lapsed |