US2940518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means and method for minimizing pressure drop in an expulsive gas during expulsion of a liquid propellant
Assignee: Boeing Co
•
Filing: 1955-07-26
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Granted: 1960-06-14
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Expires: 1975-07-26
Abstract
No abstract record available.
Inventors
- 👤 John A Lawler
- 👤 Clinton A Wilkinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:39
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/42; F02K9/60; F02K9/605; F02K9/44; F02K9/50; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0391; Y10T137/2931; Y10T137/3115; Y10T137/3127
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US243769A
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US542400A
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US793253A
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US1238633A
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US1922920A
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US2248073A
Cited
US2697483A
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US2713895A
Cited
US2724433A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |