JPH02112491U - - Google Patents

Info

Publication number

JPH02112491U

JPH02112491U JP2162289U JP2162289U JPH02112491U JP H02112491 U JPH02112491 U JP H02112491U JP 2162289 U JP2162289 U JP 2162289U JP 2162289 U JP2162289 U JP 2162289U JP H02112491 U JPH02112491 U JP H02112491U

Authority

JP

Japan

Prior art keywords

protrusion

sharpening pencil

high hardness

protection tube

utility

Prior art date

1989-02-27

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

• 239000011248 coating agent Substances 0.000 claims description 2
• 238000000576 coating method Methods 0.000 claims description 2

Cited By (1)