1937486

Information

• Patent Grant
• 1937486

• References
• Source

• Patent Number

  1,937,486

• Date Filed

  Not available

• Date Issued

  Tuesday, November 28, 1933
  91 years ago

• CPC

  • B21D47/005 - Making gratings
  • Y10T29/4962 - Grille making
  • Y10T29/49938 - Radially expanding part in cavity, aperture, or hollow body

• US Classifications

  • 029 - Metal working
  • 209 - Classifying, separating, and assorting solids
  • 210 - Liquid purification or separation