![]() 238000006011 modification reaction Methods 0.000 description 6. ![]() 239000002131 composite material Substances 0.000 description 13.Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by Brush Development Co filed Critical Brush Development Co Priority to US455416A priority Critical patent/US2439499A/en Application granted granted Critical Publication of US2439499A publication Critical patent/US2439499A/en Anticipated expiration legal-status Critical Status Expired - Lifetime legal-status Critical Current Links Original Assignee Brush Development Co Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US455416A Inventor Alfred L W Williams Walter J Brown Current Assignee (The listed assignees may be inaccurate. Google Patents US2439499A - Piezoelectric motorÄownload PDF Info Publication number US2439499A US2439499A US455416A US45541642A US2439499A US 2439499 A US2439499 A US 2439499A US 455416 A US455416 A US 455416A US 45541642 A US45541642 A US 45541642A US 2439499 A US2439499 A US 2439499A Authority US United States Prior art keywords axis shaft sections elements piezoelectric Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.
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