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公开(公告)号：US2616481A
公开(公告)日：1952-11-04
申请号：US71930446
申请日：1946-12-30
Applicant: ROBERT TWELLS , BUCKLES PAUL E
Inventor： ROBERT TWELLS , BUCKLES PAUL E
CPC classification number: B29C65/42 , B29C63/18 , B29C65/483 , B29C65/54 , B29C66/1122 , B29C66/5221 , B29C66/52272 , B29C66/5344 , B29C66/5346 , H01T21/02 , Y10T29/53652
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