US2969211A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inflatable-wing rocopter
Assignee: Individual
•
Filing: 1959-10-06
•
Granted: 1961-01-24
•
Expires: 1979-10-06
Abstract
No abstract record available.
Inventors
- 👤 Saurma Friedrich G Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:17
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/02; B64C27/021; B64C27/022; B64C3/00; B64C3/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE660793C
Cited
US2640549A
Cited
US2684213A
Cited
US2616509A
Cited
US2614636A
Cited
US2654320A
Cited
US2776017A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-24 | 1964-07-25 | 1965-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-24 | 1968-07-25 | 1969-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-24 | 1972-07-25 | 1973-01-24 | $7700.00 | Window Closed / Lapsed |