US3425741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Land vehicle having minimum air drag
Assignee: Individual
•
Filing: 1966-11-04
•
Granted: 1969-02-04
•
Expires: 1986-11-04
Abstract
No abstract record available.
Inventors
- 👤 Walter H Korff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:42
CPC Classifications
B; B62; B62D; B62D35/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2128686A
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US2071592A
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GB463620A
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US2037942A
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DE762588C
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US2488991A
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US2694357A
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US2955869A
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US2853852A
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US3066893A
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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) | 1972-02-04 | 1972-08-05 | 1973-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-04 | 1976-08-05 | 1977-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-04 | 1980-08-05 | 1981-02-04 | $7700.00 | Window Closed / Lapsed |