JPS6447809U - - Google Patents

Info

Publication number

JPS6447809U

JPS6447809U JP1987142642U JP14264287U JPS6447809U JP S6447809 U JPS6447809 U JP S6447809U JP 1987142642 U JP1987142642 U JP 1987142642U JP 14264287 U JP14264287 U JP 14264287U JP S6447809 U JPS6447809 U JP S6447809U

Authority

JP

Japan

Prior art keywords

magnetic

protective layer

magnetic marker

coated

utility

Prior art date

1987-09-17

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

• 239000011241 protective layer Substances 0.000 claims description 4
• 239000010410 layer Substances 0.000 claims description 2
• 239000003550 marker Substances 0.000 claims 2
• 239000000463 material Substances 0.000 description 2
• 239000004575 stone Substances 0.000 description 2
• 239000000853 adhesive Substances 0.000 description 1
• 230000001070 adhesive effect Effects 0.000 description 1
• 238000010586 diagram Methods 0.000 description 1