JPS6271993U - - Google Patents

Info

Publication number

JPS6271993U

JPS6271993U JP16191485U JP16191485U JPS6271993U JP S6271993 U JPS6271993 U JP S6271993U JP 16191485 U JP16191485 U JP 16191485U JP 16191485 U JP16191485 U JP 16191485U JP S6271993 U JPS6271993 U JP S6271993U

Authority

JP

Japan

Prior art keywords

diaphragm

cone

peripheral end

utility

model registration

Prior art date

1985-10-22

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

• 230000002093 peripheral effect Effects 0.000 claims description 4
• 238000007796 conventional method Methods 0.000 description 1