发明授权
- 专利标题: Torus smoking pipe
- 专利标题(中): 环形烟斗
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申请号: US290170申请日: 1981-08-19
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公开(公告)号: US4398547A公开(公告)日: 1983-08-16
- 发明人: Robert E. Gillis
- 申请人: Robert E. Gillis
- 专利权人: Gillis Robert E
- 当前专利权人: Gillis Robert E
- 主分类号: A24F1/00
- IPC分类号: A24F1/00 ; A24F5/00 ; A24F7/00
摘要:
A smoking pipe in the form of a round or oval torus is provided having a bowl for the reception of a substance to be smoked at one end and a mouth hole at the opposite end with smoke passages leading from said bowl to said mouth hole on both sides of the torus.
公开/授权文献
- US5448193A Normalization of apparent propagation delay 公开/授权日:1995-09-05
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