US3196823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drag reducing means
Assignee: Douglas Aircraft Co Inc
•
Filing: 1963-03-19
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Granted: 1965-07-27
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Expires: 1983-03-19
Abstract
No abstract record available.
Inventors
- 👤 Thurston Sidney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:35
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/32; B63B1/34; Y; Y02; Y02T; Y02T70/00; Y02T70/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A WATER BORNE VEHICLE HAVING A FORE END AND AN AFT END; AND A WATER DRAG REDUCING AGENT LOCATED EXTERIORLY OF SAID VEHICLE AND MOUNTED ADJACENT THE FORE END THEREOF IN A POSITION TO BE SUBJECTED TO CONTACT BY WATER FLOWING RELATIVELY REARWARD ALONG THE SURFACE OF
Claim 2
Dependent Claim
47 words
A WATER BORNE VEHICLE HAVING A FORE END AND AN AFT END; AND A WATER DRAG REDUCING AGENT LOCATED EXTERIORLY OF SAID VEHICLE AND MOUNTED ADJACENT THE FORE END THEREOF IN A POSITION TO BE SUBJECTED TO CONTACT BY WATER FLOWING RELATIVELY REARWARD ALONG THE SURFACE OF
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) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |