US2953322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Airborne vehicle with variable area sustentation means
Assignee: Individual
•
Filing: 1954-05-21
•
Granted: 1960-09-20
•
Expires: 1974-05-21
Abstract
No abstract record available.
Inventors
- 👤 William L Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:12
CPC Classifications
B; B64; B64C; B64C3/00; B64C3/38; Y; Y02; Y02T; Y02T50/00; Y02T50/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR374737A
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FR986603A
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US2470602A
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GB628047A
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FR1015450A
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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) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |