Support for head engaging device
作者： Jackson A Aileo
DOI:
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摘要:
lens.org 参考文章(4)
Mestral George De, Velvet type fabric and method of producing same ,(1952)
August L Hintz, Ear-phone head support ,(1952)
Jackson A Aileo, Soft helmet for carrying sound attenuating earmuffs ,(1959)
Charles Adams-Randall, Head-support for telephone-receivers. ,(1914)