US2670804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft having rotative sustaining blades and control mechanism for such aircraft
Assignee: Autogiro Company of America
•
Filing: 1946-11-22
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Granted: 1954-03-02
•
Expires: 1966-11-22
Abstract
No abstract record available.
Inventors
- 👤 Harris S Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:19
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/54; B64C27/58; B64C27/59; B64C27/605
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR637938A
Cited
US1783011A
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US1919089A
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CH155974A
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US2230370A
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US2344967A
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US2233747A
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US2432677A
Cited
US2417003A
Cited
US2414766A
Cited
US2439089A
Cited
US2464991A
Cited
US2496624A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-01 | 1957-08-31 | 1958-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-01 | 1961-08-31 | 1962-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-01 | 1965-08-31 | 1966-03-02 | $7700.00 | Window Closed / Lapsed |