-
公开(公告)号:US1019579A
公开(公告)日:1912-03-05
申请号:US1911610674
申请日:1911-02-25
Applicant: ZELLS WALTER EDWARD
Inventor: ZELLS WALTER EDWARD
CPC classification number: B64C2201/00
公开(公告)号:US1019579A
公开(公告)日:1912-03-05
申请号:US1911610674
申请日:1911-02-25
Applicant: ZELLS WALTER EDWARD
Inventor: ZELLS WALTER EDWARD
CPC classification number: B64C2201/00