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公开(公告)号：US2656949A
公开(公告)日：1953-10-27
申请号：US13114449
申请日：1949-12-05
Applicant: SMITH CORP A O
Inventor： LEUPOLD GLENN W
CPC classification number: B01J3/048 , B01J3/002 , B23K35/304 , B65D7/38 , F16L41/084 , Y10S220/917 , Y10S428/939 , Y10T29/49888 , Y10T428/12458 , Y10T428/12604 , Y10T428/12958
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