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公开(公告)号：US2400023A
公开(公告)日：1946-05-07
申请号：US55223244
申请日：1944-09-01
Applicant: POTTER ORVILLE V
Inventor： POTTER ORVILLE V
CPC classification number: A61H7/001 , A61H33/04 , A61H2033/041 , A61H2201/1284 , A61H2201/1692 , A63B21/4025 , A63B23/10 , A63B69/0028
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