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公开(公告)号：US2878117A
公开(公告)日：1959-03-17
申请号：US59479156
申请日：1956-06-29
Applicant: IMPROVED MACHINERY INC
Inventor： ALLAN CARLSMITH LAWRENCE , RICH JOHN P
CPC classification number: B23K35/302 , D21C7/00
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公开(公告)号：US3327862A
公开(公告)日：1967-06-27
申请号：US59098166
申请日：1966-10-31
Applicant: IMPROVED MACHINERY INC
Inventor： ALLAN CARLSMITH LAWRENCE
CPC classification number: B01D33/06 , B01D33/465 , B01D33/70
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