Patent US900820A successfully refreshed from Google Patents.
Patent US2701445A successfully refreshed from Google Patents.
US2701445A
Expired / Lapsed
US
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Ignition equipment for the combustion equipment of rocket motors
Assignee: Armstrong Siddeley Motors Ltd
•
Filing: 1951-08-03
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Granted: 1955-02-08
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Expires: 1971-08-03
Abstract
No abstract record available.
Inventors
- 👤 Edward G D Andrews
- 👤 Anthony W T Mottram
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:28
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/95
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE522435C
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US1879186A
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US2395403A
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US2286909A
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US2408111A
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US2520751A
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US2500334A
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US2470564A
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US2489716A
Cited
US2525207A
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US2480147A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-02-07 | 1958-08-09 | 1959-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-07 | 1962-08-09 | 1963-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-07 | 1966-08-09 | 1967-02-08 | $7700.00 | Window Closed / Lapsed |