Patent search ap:("PRATT HAROLD I" OR "BAKER PRATT RUTH") AND inv:"BAKER PRATT RUTH" Page 1

1.

发明授权
Process of making resistant plated tubing 失效
Title translation: 制造耐电镀管的工艺

公开(公告)号：US1728168A

公开(公告)日：1929-09-10

申请号：US6217225

申请日：1925-10-12

Applicant: PRATT HAROLD I , BAKER PRATT RUTH

Inventor： PRATT HAROLD I , BAKER PRATT RUTH

IPC: B21C37/15

CPC classification number: B21C37/154 , Y10S76/04 , Y10T29/49885 , Y10T29/49888

2.

发明授权
Die of the extruding and wire drawing type and process of making the same 失效
Title translation: 挤压和拉丝的模具及其制造方法

公开(公告)号：US1817680A

公开(公告)日：1931-08-04

申请号：US7202025

申请日：1925-11-28

Applicant: PRATT HAROLD I , BAKER PRATT RUTH

Inventor： PRATT HAROLD I , BAKER PRATT RUTH

IPC: B21C3/18 , C25D1/10

CPC classification number: B21C3/18 , C25D1/10 , Y10S76/04 , Y10S428/934 , Y10T428/12847 , Y10T428/12854

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