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公开(公告)号：US1770449A
公开(公告)日：1930-07-15
申请号：US33297629
申请日：1929-01-16
Applicant: ACKERMAN BLAESSER FEZZEY INC
Inventor： ACKERMAN EDWARD L , ZWIERZINA ALOIS J
IPC: E05F11/50
CPC classification number: E05F11/505 , E05Y2900/55
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公开(公告)号：US1651052A
公开(公告)日：1927-11-29
申请号：US19618127
申请日：1927-06-03
Applicant: ACKERMAN BLAESSER FEZZEY INC
Inventor： ACKERMAN EDWARD L , ZWIERZINA ALOIS J
IPC: E05F11/38
CPC classification number: E05F11/382 , E05Y2201/49 , E05Y2900/55
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