Patent US2972227A successfully refreshed from Google Patents.
US2972227A
Expired / Lapsed
US
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Means for supplying a rocket motor with liquid fuel and concentrated hydrogen peroxide as propellant
Assignee: Bristol Siddeley Engines Ltd
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Filing: 1957-07-03
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Granted: 1961-02-21
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Expires: 1977-07-03
Abstract
No abstract record available.
Inventors
- 👤 Allen Sidney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:57
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/42; F02K9/60; F02K9/68; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49346
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2706887A
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US2555081A
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US2591880A
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GB680717A
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US2763126A
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US2605609A
Cited
GB727720A
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US2791883A
Cited
US2880577A
Cited
US2906091A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-21 | 1964-08-22 | 1965-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-21 | 1968-08-22 | 1969-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-21 | 1972-08-22 | 1973-02-21 | $7700.00 | Window Closed / Lapsed |