发明授权
- 专利标题: Alcohol and tobacco age identification electronic perpetual calendar
- 专利标题(中): 酒精和烟草年龄鉴定电子万年历
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申请号: US739306申请日: 1996-10-29
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公开(公告)号: US5696739A公开(公告)日: 1997-12-09
- 发明人: Nai-Wen Chang
- 申请人: Nai-Wen Chang
- 专利权人: Chang; Nai-Wen
- 当前专利权人: Chang; Nai-Wen
- 主分类号: G04G9/08
- IPC分类号: G04G9/08 ; G04G99/00 ; B04B19/24 ; C04C17/00
摘要:
An alcohol and tobacco age identification perpetual calendar specifically designed for cashiers of the stores that sells alcohol or tobacco products to check customer's identification and can easily verify customer's age before making the sales.
公开/授权文献
- US4074584A Domestic food mixers 公开/授权日:1978-02-21