Tap assembly for beer kegs
作者： Fred P Cserny
DOI:
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摘要:
lens.org 参考文章(3)
Mack S Johnston, Beer siphon assembly ,(1961)
Jease F Thomas, Claud R Brown, Beer dispensing and carbonating apparatus ,(1933)
Arnold C Kish, Device for tapping a barrel and removing a liquid therefrom ,(1951)