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1.
公开(公告)号:US3169657A
公开(公告)日:1965-02-16
申请号:US12232861
申请日:1961-07-06
Applicant: DURO TEST CORP
Inventor: OLSEN ANDREW H
IPC: C03B23/051
CPC classification number: C03B23/051
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2.Apparatus for controlled movement of flame heating means to form spiral lamp tubes 失效
Title translation: 用于火焰加热的受控运动的装置,以形成螺旋灯管公开(公告)号:US3243278A
公开(公告)日:1966-03-29
申请号:US45689065
申请日:1965-05-05
Applicant: DURO TEST CORP
Inventor: OLSEN ANDREW H , TRUTNER DONALD G
IPC: C03B23/051 , H01J9/24
CPC classification number: H01J9/247 , C03B23/051
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公开(公告)号:US3129085A
公开(公告)日:1964-04-14
申请号:US8579061
申请日:1961-01-30
Applicant: DURO TEST CORP
Inventor: OLSEN ANDREW H , TRUTNER DONALD G
IPC: C03B23/051 , H01J9/24
CPC classification number: C03B23/051 , H01J9/247
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4.Machine for forming helical grooves in thin wall galss tubing 失效
Title translation: 用于在薄壁管道中形成螺旋槽的机器公开(公告)号:US3399984A
公开(公告)日:1968-09-03
申请号:US39996764
申请日:1964-09-29
Applicant: DURO TEST CORP
Inventor: TRUTNER DONALD G , OLSEN ANDREW H
IPC: C03B23/051
CPC classification number: C03B23/051
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公开(公告)号:US3186819A
公开(公告)日:1965-06-01
申请号:US13398961
申请日:1961-08-25
Applicant: DURO TEST CORP
Inventor: LUKE THORINGTON , OLSEN ANDREW H , TRUTNER DONALD G
IPC: C03B23/051
CPC classification number: C03B23/051
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