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公开(公告)号：US1973318A
公开(公告)日：1934-09-11
申请号：US59147932
申请日：1932-02-08
Applicant: LEE EDWARD E
Inventor： LEE EDWARD E
IPC: G03B17/53
CPC classification number: G03B17/53
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公开(公告)号：US640574A
公开(公告)日：1900-01-02
申请号：US1899728736
申请日：1899-08-28
Applicant: LEE EDWARD E
Inventor： LEE EDWARD E
CPC classification number: B62K2201/04
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