Patent US3471090A successfully refreshed from Google Patents.
US3471090A
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Boundary layer control means
Assignee: Individual
•
Filing: 1967-02-13
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Granted: 1969-10-07
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Expires: 1987-02-13
Abstract
No abstract record available.
Inventors
- 👤 Hermann Papst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:57
CPC Classifications
B; B21; B21D; B21D13/00; B21D13/02; B60; B60K; B60K11/00; B60K11/08; B62; B62D; B62D31/00; B62D31/02; B62D35/00; B62D37/00; B64; B64C; B64C21/00; B64C21/02; B64C21/06; F; F01; F01D; F01D5/00; F01D5/12; F01D5/14; F01D5/141; F01D5/145; F02; F02K; F02K1/00; F02K1/78; F04; F04D; F04D29/00; F04D29/26; F04D29/28; F04D29/30; F04D29/32; F04D29/321; F04D29/324; F04D29/66; F04D29/68; F04D29/681; B64C2230/00; B64C2230/04; Y; Y02; Y02T; Y02T50/00; Y02T50/10; Y02T50/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3003311A
Cited
US2986602A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |