Patent US2987875A successfully refreshed from Google Patents.
US2987875A
Expired / Lapsed
US
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Ramjet power plants for missiles
Assignee: Phillips Petroleum Co
•
Filing: 1955-05-26
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Granted: 1961-06-13
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Expires: 1975-05-26
Abstract
No abstract record available.
Inventors
- 👤 Homer M Fox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:45
CPC Classifications
F; F02; F02K; F02K7/00; F02K7/10; F02K7/18; F02K9/00; F02K9/42; F02K9/44; F02K9/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1273466A
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US2419866A
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US2657532A
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US2701441A
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US2711630A
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US2753801A
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US2799987A
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US2912820A
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US2939281A
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US2940256A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |