Lap tray with adjustable leg-engaging means
作者： Frey Ephriam
DOI:
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摘要:
lens.org 参考文章(4)
Georgides George Zanos, Lap tray with leg engaging means ,(1952)
Newman Irving, Lap tray with leg engaging means ,(1950)
Frey Ephriam, Lap tray with leg-engaging means ,(1955)
Robert Crawford Johnson, Table for application to chairs. ,(1911)