Luggage carrier having projectable and retractible supporting rollers
作者： Jones Wendell Cooley
DOI:
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摘要:
lens.org 参考文章(3)
Clarence F Norlin, Portable luggage having retractable wheels ,(1947)
Keil Rudolph, Wheeled trunk and the like ,(1946)
Harney H James, Combination satchel, cart, and camp-stool. ,(1913)