JPH01102638U - - Google Patents

Info

Publication number

JPH01102638U

JPH01102638U JP19753287U JP19753287U JPH01102638U JP H01102638 U JPH01102638 U JP H01102638U JP 19753287 U JP19753287 U JP 19753287U JP 19753287 U JP19753287 U JP 19753287U JP H01102638 U JPH01102638 U JP H01102638U

Authority

JP

Japan

Prior art keywords

ventilation fan

certain period

time

timer counter

timer

Prior art date

1987-12-28

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

Cited By (1)