3230631

Information

• Patent Grant
• 3230631

• References
• Source

• Patent Number

  3,230,631

• Date Filed

  Not available

• Date Issued

  Tuesday, January 25, 1966
  59 years ago

• CPC

  • B25D5/00 - Centre punches
  • B25D5/02 - Automatic centre punches
  • G01B9/00 - Instruments as specified in the subgroups and characterised by the use of optical measuring means
  • G02B25/002 - Magnifying glasses

• US Classifications

  • 033 - Geometrical instruments
  • 030 - Cutlery
  • 359 - Optical: systems and elements