Patent search ap:("GRAHAM EMMA E") AND inv:"GRAHAM EMMA E" Page 1

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发明授权
Cork substitute and process of manufacture 失效
Title translation: 软木替代品和制造工艺

公开(公告)号：US1427682A

公开(公告)日：1922-08-29

申请号：US35144020

申请日：1920-01-14

Applicant: GRAHAM EMMA E

Inventor： GRAHAM EMMA E

IPC: B27K5/06

CPC classification number: B27K3/20 , B27K5/001 , B27K5/06 , B27K7/00

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