機械・工学板 雑談・自治スレッド
364 ：名無しさん＠１周年：
>>362
The answer is the "ｋｅｙ ｏｐｅｎｅｒ", key type can opener.
http://www.gti.net/mocolib1/kid/foodfaq1.html#cornedbeef
In 1866, J. Osterhoudt patented the tin can with a key opener.
http://inventors.about.com/library/inventors/blcan.htm
The answer is the "ｋｅｙ ｏｐｅｎｅｒ", key type can opener.
http://www.gti.net/mocolib1/kid/foodfaq1.html#cornedbeef
In 1866, J. Osterhoudt patented the tin can with a key opener.
http://inventors.about.com/library/inventors/blcan.htm
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