Patent search ap:("SPECIALTIES DEV CORP") AND inv:"HAYES RALPH P" Page 1

1.

发明授权
Method of forming receptacles 失效
Title translation: 形成容器的方法

公开(公告)号：US2517584A

公开(公告)日：1950-08-08

申请号：US70593246

申请日：1946-10-26

Applicant: SPECIALTIES DEV CORP

Inventor： DANIEL MAPES , SYLVESTER WALTER G , HAYES RALPH P

IPC: A47J36/02 , B21D51/22

CPC classification number: A47J36/02 , B21D51/22

Patent Agency Ranking