Patent search ap:("LAMB GRAYS HARBOR CO INC") AND inv:"KELLY JOHN E" Page 1

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发明授权
Conveyor 失效

公开(公告)号：US2990939A

公开(公告)日：1961-07-04

申请号：US80472459

申请日：1959-04-07

Applicant: LAMB GRAYS HARBOR CO INC

Inventor： KELLY JOHN E

IPC: B65G15/60

CPC classification number: B65G15/60 , B65G2201/04

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