US2485316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slide valve
Assignee: Standard Oil Development Co
•
Filing: 1944-12-30
•
Granted: 1949-10-18
•
Expires: 1964-12-30
Abstract
No abstract record available.
Inventors
- 👤 Jr Leroy V Robbins
- 👤 William D Luening
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:22
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/0015; B01J8/002; F; F16; F16K; F16K24/00; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4245; Y10T137/4259
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US534360A
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US592478A
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US1112066A
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US1334248A
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US1613509A
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US1529178A
Cited
US2031151A
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US2305724A
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US2359029A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-17 | 1953-04-18 | 1953-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-17 | 1957-04-18 | 1957-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-17 | 1961-04-18 | 1961-10-18 | $7700.00 | Window Closed / Lapsed |