Patent US3392693A successfully refreshed from Google Patents.
US3392693A
Expired / Lapsed
US
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Method of and means for reducing drag
Assignee: Lockheed Martin Corp
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Filing: 1966-11-02
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Granted: 1968-07-16
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Expires: 1986-11-02
Abstract
No abstract record available.
Inventors
- 👤 Hulsebos Jan
- 👤 Willi F Jacobs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:45
CPC Classifications
F; F42; F42B; F42B19/00; F42B19/12; F42B19/125; Y; Y02; Y02T; Y02T70/00; Y02T70/10
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) | 1971-07-16 | 1972-01-15 | 1972-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-16 | 1976-01-15 | 1976-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-16 | 1980-01-15 | 1980-07-16 | $7700.00 | Window Closed / Lapsed |