US2749940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slide valve
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1952-03-20
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Granted: 1956-06-12
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Expires: 1972-03-20
Abstract
No abstract record available.
Inventors
- 👤 Ii Stanley O Bronson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:22
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/02; F16K3/029; B; B01; B01J; B01J8/00; B01J8/08; B01J8/082; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/6161; Y10T137/6164; Y10T137/8593; Y10T137/87917
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US283264A
Cited
US586433A
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US1325496A
Cited
US992027A
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US1192141A
Cited
US1753276A
Cited
US1788763A
Cited
US2330290A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |