Patent US2659552A successfully refreshed from Google Patents.
US2659552A
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US
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Aircraft surface with boundary layer control
Assignee: Individual
•
Filing: 1950-06-09
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Granted: 1953-11-17
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Expires: 1970-06-09
Abstract
No abstract record available.
Inventors
- 👤 Edward A Stalker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:55
CPC Classifications
B; B64; B64C; B64C21/00; B64C21/01; B64C21/02; B64C21/06; B64C2230/00; B64C2230/04; B64C2230/06; B64C2230/22; Y; Y02; Y02T; Y02T50/00; Y02T50/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1691942A
Cited
US1829616A
Cited
GB479598A
Cited
US2477637A
Cited
US2431592A
Cited
US2447100A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-16 | 1957-05-18 | 1957-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-16 | 1961-05-18 | 1961-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-16 | 1965-05-18 | 1965-11-17 | $7700.00 | Window Closed / Lapsed |