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US3486718A
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US
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Convertible ground-effect/v.t.o.l vehicle
Assignee: Safran Aircraft Engines SAS
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Filing: 1967-09-11
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Granted: 1969-12-30
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Expires: 1987-09-11
Abstract
No abstract record available.
Inventors
- 👤 Raymond Hippolyte Firm Marchal
- 👤 Don Pierre Louis Jea Colombani
- 👤 Adolphe Otton Gontier Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:53
CPC Classifications
B; B60; B60V; B60V1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2753934A
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US2989271A
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US3117643A
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US3095694A
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US3417943A
Cited
US3130939A
Cited
US3278138A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-29 | 1973-06-30 | 1973-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-29 | 1977-06-30 | 1977-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-29 | 1981-06-30 | 1981-12-30 | $7700.00 | Window Closed / Lapsed |