JPS6457274U - - Google Patents

Info

Publication number

JPS6457274U

JPS6457274U JP1987150494U JP15049487U JPS6457274U JP S6457274 U JPS6457274 U JP S6457274U JP 1987150494 U JP1987150494 U JP 1987150494U JP 15049487 U JP15049487 U JP 15049487U JP S6457274 U JPS6457274 U JP S6457274U

Authority

JP

Japan

Prior art keywords

door

detection means

key

detecting

alarm

Prior art date

1987-10-02

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

• 238000001514 detection method Methods 0.000 claims description 10
• 230000002265 prevention Effects 0.000 claims description 3
• 230000037431 insertion Effects 0.000 claims 2
• 238000003780 insertion Methods 0.000 claims 2
• 238000010586 diagram Methods 0.000 description 2

Cited By (1)