JPS61194469U - - Google Patents

Info

Publication number

JPS61194469U

JPS61194469U JP7742485U JP7742485U JPS61194469U JP S61194469 U JPS61194469 U JP S61194469U JP 7742485 U JP7742485 U JP 7742485U JP 7742485 U JP7742485 U JP 7742485U JP S61194469 U JPS61194469 U JP S61194469U

Authority

JP

Japan

Prior art keywords

suction port

ventilation chamber

small diameter

wide

communicate

Prior art date

1985-05-24

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 6
• 238000010586 diagram Methods 0.000 description 1