Patent US3053283A successfully refreshed from Google Patents.
US3053283A
Expired / Lapsed
US
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Duct assemblies
Assignee: Bristol Siddeley Engines Ltd
•
Filing: 1959-03-02
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Granted: 1962-09-11
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Expires: 1979-03-02
Abstract
No abstract record available.
Inventors
- 👤 Allen Francis Donald
- 👤 Milford Christopher Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:11
CPC Classifications
F; F02; F02K; F02K1/00; F02K1/78; F02K1/82; F02K1/822; F16; F16L; F16L9/00; F16L9/18; F23; F23R; F23R3/00; F23R3/002; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US182370A
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US566243A
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US930012A
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US2325616A
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US2475635A
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US2500501A
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US2634759A
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US2717320A
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US2785878A
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US2795108A
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US2759491A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-10 | 1966-03-12 | 1966-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-10 | 1970-03-12 | 1970-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-10 | 1974-03-12 | 1974-09-11 | $7700.00 | Window Closed / Lapsed |