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:
Nov. 30, 1999
Filed:
Mar. 06, 1997
Applicant:
Inventor:
Yoshihiro Arai, Tokyo, JP;
Assignee:
JEOL Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
2503 / ; 3133611 ;
Abstract
A printed circuit for forming deflection coils used, for example, in a scanning electron microscope. The printed circuit permits some of scroll coil circuits to be connected with an external circuit with or without connecting them in series. There is also disclosed a printed circuit capable of forming deflection coils which are small in size but produce strong magnetic fields. A printed circuit according to the invention comprises a sheet on which the scroll coils and indicia are printed. When the sheet is wound into a cylinder, the scroll coils are arranged circumferentially.