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公开(公告)号：US3614443A
公开(公告)日：1971-10-19
申请号：US3614443D
申请日：1968-08-16
Applicant: SMITH KLINE FRENCH LAB
Inventor： HESSELBO TORBEN , GROVES ARTHUR DEREK GEORGE
CPC classification number: H01J47/10
Abstract: A gastight, crossed wire spark chamber having the major part of each of the walls thereof being formed from a transparent material and further having associated therewith manual or mechanical means for effecting movement of the chamber with respect to an externally mounted radioactive pattern in a plane substantially parallel to the planes of the electrodes disposed within the chamber.
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