The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 31, 1977
Filed:
Apr. 07, 1975
Applicant:
Inventors:
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
128 / ; 128 / ;
Abstract
A blood pressure measuring apparatus in which an output of a microphone capable of detecting the Korotkoff sounds is directed to a first band-pass filter of 5 to 30 Hz and a second band-pass filter of 40 to 200 Hz, and the presence or absence of an output from the second band-pass filter is counted by a counter circuit, whereby the maximum blood pressure is indicated when the counter is set to one state and the minimum blood pressure is indicated when the counter is set to the other state.