Patent search ap:("SUN OIL CO") AND inv:"BARTHOLF FRANCIS B" Page 1

1.

发明授权
Thermoplastic fibers and method of preparing same 失效
Title translation: 热塑性纤维及其制备方法

公开(公告)号：US3349052A

公开(公告)日：1967-10-24

申请号：US43693665

申请日：1965-03-03

Applicant: SUN OIL CO

Inventor： RALPH ZAAYENGA , BARTHOLF FRANCIS B

IPC: D01D5/40 , D01F6/04

CPC classification number: D01F6/04 , D01D5/40

Patent Agency Ranking