US2669835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wall structure for regeneratively cooled rocket motors
Assignee: MW Kellogg Co
•
Filing: 1949-03-04
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Granted: 1954-02-23
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Expires: 1969-03-04
Abstract
No abstract record available.
Inventors
- 👤 David B Rossheim
- 👤 Douglas V Doane
- 👤 Carleton A Siemer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:27
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/42; F02K9/60; F02K9/62; F02K9/64; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49346
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1250260A
Cited
US2397658A
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US2448648A
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US2446059A
Cited
US2445856A
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US2448561A
Cited
US2585626A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-22 | 1957-08-24 | 1958-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-22 | 1961-08-24 | 1962-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-22 | 1965-08-24 | 1966-02-23 | $7700.00 | Window Closed / Lapsed |