Patent search ap:("FORDEES CORP") AND inv:"GRAPPO GEORGE A" Page 1

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发明授权
Hydraulically operated portable scaffold 失效
Title translation: 液压便携式脚手架

公开(公告)号：US3091305A

公开(公告)日：1963-05-28

申请号：US10631061

申请日：1961-04-28

Applicant: FORDEES CORP

Inventor： PICKARD EDGAR C , JACKSON WILLIAM R , GRAPPO GEORGE A

IPC: B66F11/04 , E04G1/22

CPC classification number: E04G1/22 , B66F11/04

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