JPS6416413U - - Google Patents

Info

Publication number

JPS6416413U

JPS6416413U JP11132487U JP11132487U JPS6416413U JP S6416413 U JPS6416413 U JP S6416413U JP 11132487 U JP11132487 U JP 11132487U JP 11132487 U JP11132487 U JP 11132487U JP S6416413 U JPS6416413 U JP S6416413U

Authority

JP

Japan

Prior art keywords

check valve

air outlet

inside air

ventilation duct

tongue

Prior art date

1987-07-22

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 4
• 238000009434 installation Methods 0.000 description 1

Cited By (1)