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公开(公告)号：US2224867A
公开(公告)日：1940-12-17
申请号：US23958238
申请日：1938-11-08
Applicant: HECHLER ERNEST J
Inventor： HECHLER ERNEST J
IPC: B23D61/02
CPC classification number: B23D61/021 , B23D61/02 , Y10T83/936
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公开(公告)号：US2301539A
公开(公告)日：1942-11-10
申请号：US35911840
申请日：1940-09-30
Applicant: HECHLER ERNEST J
Inventor： HECHLER ERNEST J
IPC: B23D63/10
CPC classification number: B23D63/10 , B23D61/121 , B23D63/203
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