2197484

Information

• Patent Grant
• 2197484

• References
• Source

• Patent Number

  2,197,484

• Date Filed

  Not available

• Date Issued

  Tuesday, April 16, 1940
  85 years ago

• CPC

  • B44B3/02 - wherein plane surfaces are worked
  • B44B2700/023 - for engraving parallel lines of flat surfaces
  • Y10T29/33 - Stereotype-plate finishing

• US Classifications

  • 029 - Metal working