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公开(公告)号：US1957951A
公开(公告)日：1934-05-08
申请号：US57336331
申请日：1931-11-06
Applicant: GAERTNER SCIENT CORP
Inventor： WILLIAM GAERTNER
IPC: A62B7/14
CPC classification number: A62B7/14 , Y10T137/2012 , Y10T137/7781 , Y10T137/7831
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公开(公告)号：US1715030A
公开(公告)日：1929-05-28
申请号：US30297828
申请日：1928-08-30
Applicant: GAERTNER SCIENT CORP
Inventor： WILLIAM GAERTNER
IPC: G01J3/28
CPC classification number: G01J3/28
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