US3537240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air intake apparatus for a jet-propulsion aircraft
Assignee: Entwicklungsring Sued GmbH
•
Filing: 1967-12-11
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Granted: 1970-11-03
•
Expires: 1987-12-11
Abstract
No abstract record available.
Inventors
- 👤 Hans Weidinger
- 👤 Rolf G Sturm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:06
CPC Classifications
B; B64; B64D; B64D33/00; B64D33/02; B64C; B64C29/00; B64C29/0091; F; F02; F02C; F02C7/00; F02C7/04; F02C7/05; F02C7/055; B64D2033/022; Y; Y10; Y10T; Y10T137/00; Y10T137/794; Y10T137/8049
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US153407A
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US1312761A
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US947170A
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GB192558A
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US2010568A
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US3016109A
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FR1204525A
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US2928497A
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US2969941A
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US3280537A
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US3302396A
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US3347496A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-02 | 1974-05-04 | 1974-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-02 | 1978-05-04 | 1978-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-02 | 1982-05-04 | 1982-11-03 | $7700.00 | Window Closed / Lapsed |