File:US4121552-fig6.png
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Summary
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| Description |
English: Two-stroke engine having variable exhaust port timing |
| Date | |
| Source | https://patents.google.com/patent/US4121552A |
| Author |
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The text and illustrations of US patents published before March 1, 1989 are in the public domain unless the patent text contains a specific notice that portions are copyrighted. See 37 CFR 1.71(d), 37 CFR 1.84(s)
The original patent contains no such notice, so its contents are in the public domain. Note: This only applies to images published before March 1, 1989. Patents published after that date are most likely copyrighted, unless in the public domain for another reason, such as {{PD-ineligible}}. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 17:56, 20 January 2022 | | 1,071 × 803 (40 KB) | MichaelFrey (talk | contribs) | coloring |
| 17:44, 20 January 2022 |  | 1,071 × 803 (29 KB) | MichaelFrey (talk | contribs) | =={{int:filedesc}}== {{Information |description={{en|1=Two-stroke engine having variable exhaust port timing}} |date=1975-09-12 |source=https://patents.google.com/patent/US4121552A |author=Inventor * Nagahama Mithuo * Aoi Kazuo * Hirano Seiji Current Assignee * Yamaha Motor Co Ltd |permission= |other versions= }} =={{int:license-header}}== {{PD-US-patent-no notice}} Category:Yamaha Power Valve System |
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