JPH033866U - - Google Patents

Info

Publication number

JPH033866U

JPH033866U JP6455889U JP6455889U JPH033866U JP H033866 U JPH033866 U JP H033866U JP 6455889 U JP6455889 U JP 6455889U JP 6455889 U JP6455889 U JP 6455889U JP H033866 U JPH033866 U JP H033866U

Authority

JP

Japan

Prior art keywords

circuit

switch

telephone

telephone line

voltage detection

Prior art date

1989-06-01

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 4
• 230000015572 biosynthetic process Effects 0.000 claims description 3
• 238000003786 synthesis reaction Methods 0.000 claims description 3
• 238000010586 diagram Methods 0.000 description 1

Cited By (1)