2640380

Information

• Patent Grant
• 2640380

• References
• Source

• Patent Number

  2,640,380

• Date Filed

  Not available

• Date Issued

  Tuesday, June 2, 1953
  71 years ago

• CPC

  • B23D47/047 - the work being mounted on rotating work support
  • B23D45/10 - with a plurality of circular saw blades
  • B29D19/04 - by cutting, milling, turning, stamping, or perforating moulded parts Surface treatment of buttons

• US Classifications

  • 079 - Button making
  • 125 - Stone working
  • 221 - Article dispensing
  • 451 - Abrading