US2747374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquefied gas system
Assignee: Individual
•
Filing: 1951-08-30
•
Granted: 1956-05-29
•
Expires: 1971-08-30
Abstract
No abstract record available.
Inventors
- 👤 William O Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:13
CPC Classifications
F; F02; F02M; F02M21/00; F02M2700/00; F02M2700/12; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2562; Y10T137/7722; Y10T137/7771
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1087890A
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US1773726A
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US2462189A
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US2493369A
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US2456889A
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US2456890A
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US2599979A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |