US2587704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tangential cylinder valve
Assignee: Standard Oil Co
•
Filing: 1947-11-29
•
Granted: 1952-03-04
•
Expires: 1967-11-29
Abstract
No abstract record available.
Inventors
- 👤 Delmer G Debo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:19
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/008; F; F16; F16K; F16K29/00; B01J2208/00; B01J2208/00796; B01J2208/00884; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/6161; Y10T137/6164; Y10T137/6178; Y10T137/6851; Y10T137/7036
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US311720A
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US735074A
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US1161437A
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US1170046A
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US1609586A
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US1652054A
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US2315058A
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US2364907A
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US2440946A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-04 | 1955-09-03 | 1956-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-04 | 1959-09-03 | 1960-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-04 | 1963-09-03 | 1964-03-04 | $7700.00 | Window Closed / Lapsed |