2228236

Information

• Patent Grant
• 2228236

• References
• Source

• Patent Number

  2,228,236

• Date Filed

  Not available

• Date Issued

  Tuesday, January 7, 1941
  84 years ago

• CPC

  • B21D13/04 - by rolling
  • B21D22/027 - for flattening the ends of corrugated sheets

• US Classifications

  • 156 - Adhesive bonding and miscellaneous chemical manufacture
  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 425 - Plastic article or earthenware shaping or treating: apparatus