Patent search ap:("NAT RES DEV") AND inv:"HALL ROY GEOFFREY NOEL" Page 1

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发明授权
Rotary devices and apparatus 失效
Title translation: 旋转装置和装置

公开(公告)号：US3548337A

公开(公告)日：1970-12-15

申请号：US3548337D

申请日：1967-03-13

Applicant: NAT RES DEV

Inventor： GATES JOHN WILLIAM CHARLES , HALL ROY GEOFFREY NOEL

IPC: H01S3/121 , H01S3/00 , G02B17/00

CPC classification number: H01S3/121

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