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.

Date of Patent:
Dec. 11, 1979

Filed:

Jul. 26, 1978
Applicant:
Inventors:

Toshihiro Hotta, Yashiki, JP;

Takao Makino, Hikone, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01J / ;
U.S. Cl.
CPC ...
250355 ; 250413 ;
Abstract

A device for controlling the amount of X-ray irradiation in an X-ray photographing apparatus wherein the dose of X-rays actually administered from an X-ray tube to a patient is determined or measured in an X-ray irradiation amount measuring circuit. The measured value is compared with a set point of X-ray irradiation amount. When the measured value is in agreement with the set point, the operation of the X-ray tube is inactivated.


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