JPS643593U - - Google Patents

Info

Publication number

JPS643593U

JPS643593U JP9909587U JP9909587U JPS643593U JP S643593 U JPS643593 U JP S643593U JP 9909587 U JP9909587 U JP 9909587U JP 9909587 U JP9909587 U JP 9909587U JP S643593 U JPS643593 U JP S643593U

Authority

JP

Japan

Prior art keywords

pipe

ventilation

ventilation network

tobacco

insertion hole

Prior art date

1987-06-27

Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)

Pending

Links

• Espacenet
• Global Dossier
• Discuss

• 238000009423 ventilation Methods 0.000 claims description 9
• 241000208125 Nicotiana Species 0.000 claims description 4
• 235000002637 Nicotiana tabacum Nutrition 0.000 claims description 4
• 235000019504 cigarettes Nutrition 0.000 claims description 3
• 230000002265 prevention Effects 0.000 claims description 2
• 230000037431 insertion Effects 0.000 claims 2
• 238000003780 insertion Methods 0.000 claims 2

Cited By (1)