Patent US3412962A successfully refreshed from Google Patents.
US3412962A
Expired / Lapsed
US
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Retractable air drag reducing aircraft attachment
Assignee: Individual
•
Filing: 1967-04-10
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Granted: 1968-11-26
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Expires: 1987-04-10
Abstract
No abstract record available.
Inventors
- 👤 Claud R Killian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:23
CPC Classifications
B; B64; B64C; B64C7/00; B64C1/00; B64C1/06; B64C1/068; B64C1/0685; B64C23/00; B64C23/06; F; F42; F42B; F42B10/00; F42B10/32; F42B10/38; F42B10/42; F42B10/44; B64C2001/0045; Y; Y02; Y02T; Y02T50/00; Y02T50/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US229499A
Cited
US1817377A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-26 | 1972-05-27 | 1972-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-26 | 1976-05-27 | 1976-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-26 | 1980-05-27 | 1980-11-26 | $7700.00 | Window Closed / Lapsed |