Automatic key cutting and vending machine
作者： Dale F Roxburgh
DOI:
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摘要:
lens.org 参考文章(3)
Gauvin Amedee J, Samuels Yoskowitz, Key blank vending mechanism ,(1936)
Vladimir A Vdolek, Mechanical last exchangers ,(1957)
Amedee J Gauvin, Yoskowitz Samuels, Key duplicating mechanism ,(1936)