US3017140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propulsion and lifting surface system for aerial vehicles
Assignee: Individual
•
Filing: 1959-03-27
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Granted: 1962-01-16
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Expires: 1979-03-27
Abstract
No abstract record available.
Inventors
- 👤 John R Barnard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:51
CPC Classifications
B; B64; B64C; B64C30/00; B64C21/00; B64C21/02; B64C21/06; B64C23/00; B64C23/04; B64C2230/00; B64C2230/04; Y; Y02; Y02T; Y02T50/00; Y02T50/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-15 | 1965-07-17 | 1966-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-15 | 1969-07-17 | 1970-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-15 | 1973-07-17 | 1974-01-16 | $7700.00 | Window Closed / Lapsed |