Patent search ap:("DYNAMIC PRODUCTS DEV INC") AND inv:"GRETH LEWIS E" Page 1

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发明授权
Walking aid 失效

公开(公告)号：US3550602A

公开(公告)日：1970-12-29

申请号：US3550602D

申请日：1969-05-16

Applicant: DYNAMIC PRODUCTS DEV INC

Inventor： HESTERMAN DENNIS , GRETH LEWIS E

IPC: A45B9/00

CPC classification number: A45B9/00 , A45B2009/002

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