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公开(公告)号：US3364551A
公开(公告)日：1968-01-23
申请号：US50302565
申请日：1965-10-23
Applicant: KAHLE ENGINEERING COMPANY
Inventor： NAPOR CARL A , ENGEL WILLIAM T
IPC: G03B21/43
CPC classification number: G03B21/43 , Y10T29/5127 , Y10T29/513 , Y10T29/5137 , Y10T29/53365 , Y10T29/53465
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公开(公告)号：US3364552A
公开(公告)日：1968-01-23
申请号：US50847465
申请日：1965-11-18
Applicant: KAHLE ENGINEERING COMPANY
Inventor： NAPOR CARL A , ENGEL WILLIAM T
IPC: G03B17/26
CPC classification number: G03B17/26 , Y10T29/53383 , Y10T29/53465
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