239000010935 stainless steel Substances 0.000 description 4.229910001220 stainless steel Inorganic materials 0.000 description 4.238000005859 coupling reaction Methods 0.000 description 4.210000000038 chest Anatomy 0.000 claims abstract description 89.Status Active legal-status Critical Current Adjusted expiration legal-status Critical Links Assignors: ABBRUSCATO, CHARLES R Assigned to RUDOLF RIESTER GMBH reassignment RUDOLF RIESTER GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Priority to US12/590,362 priority Critical patent/US8320576B1/en Application filed by Charles Richard Abbruscato filed Critical Charles Richard Abbruscato Priority to US12/787,783 priority patent/US8447043B1/en Priority claimed from US13/764,027 external-priority patent/US9185496B1/en Application granted granted Critical Publication of US8447043B1 publication Critical patent/US8447043B1/en Assigned to RNK PRODUCTS, INC. Original Assignee Charles Richard Abbruscato 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.) Active, expires Application number US12/787,783 Inventor Charles Richard Abbruscato Current Assignee (The listed assignees may be inaccurate. Google Patents Piezo element stethoscopeÄownload PDF Info Publication number US8447043B1 US8447043B1 US12/787,783 US78778310A US8447043B1 US 8447043 B1 US8447043 B1 US 8447043B1 US 78778310 A US78778310 A US 78778310A US 8447043 B1 US8447043 B1 US 8447043B1 Authority US United States Prior art keywords piezo element chest piece circuit board printed circuit piece according Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US8447043B1 - Piezo element stethoscope
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