Patent search ap:("DETROIT HOIST AND MACHINE COMP") AND inv:"WATSON ARCHIBALD S" Page 1

1.

发明授权
Hoist 失效

公开(公告)号：US1632571A

公开(公告)日：1927-06-14

申请号：US344425

申请日：1925-01-19

Applicant: DETROIT HOIST AND MACHINE COMP

Inventor： WATSON ARCHIBALD S

IPC: B66D1/22

CPC classification number: B66D1/22

Patent Agency Ranking