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1.发明授权X-ray film cassette having means for permitting slidable movement of the film withrespect ot the cassette 失效X射线胶片盒具有用于允许胶片在胶片盒上可滑动移动的装置
公开(公告)号：US3383507A
公开(公告)日：1968-05-14
申请号：US47109065
申请日：1965-07-12
Applicant: POLAROID CORP
Inventor： BRACKETT ROBERT D , ERIKSON HERMAN E , YOUNG PHILIP E
IPC: G03B42/04
CPC classification number: G03B42/04
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