File:US 4019073, Fig. 5.png
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Summary
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| Description |
English: Operational principle of a piezoelectric standing wave motor Deutsch: Funktionsprinzip eines piezoelektrischen Stehwellenmotors |
| Date | |
| Source | Patent US 4019073 (Apr. 19, 1977) |
| Author | V. S. Vishnevsky, V. L. Kavertsev, I. A. Kartashev, V. V. Lavrinenko, M. M. Nekrasov, A. A. Prez |
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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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| current | 11:09, 28 November 2015 | | 873 × 972 (18 KB) | MatteX (talk | contribs) | User created page with UploadWizard |
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