Adjustable foot rests
作者： Fritz Drabert , Klaus Geffers
DOI:
关键词: Foot (unit) 、 Anatomy 、 Psychology 、 Position (obstetrics) 、 Orthodontics 、 Rest (music)
摘要: A foot rest includes a platform for receiving person''s feet and the has legs which are adjustable to vary height inclination of platform. The can be fixed in any selected position by U-shaped pivotal members engage one number grooves.
lens.org 参考文章(3)
George W Lindstrom, Electric foot-warming ottoman ,(1948)
Norman C Powers, Tray with gripping legs ,(1953)
Michael J Lowry, Foldable, extensible table ,(1956)