1642657

Information

• Patent Grant
• 1642657

• References
• Source

• Patent Number

  1,642,657

• Date Filed

  Not available

• Date Issued

  Tuesday, September 13, 1927
  97 years ago

• CPC

  • B21D11/203 - Round bending
  • B21D7/03 - Apparatus with means to keep the profile in shape

• US Classifications

  • 072 - Metal deforming
  • 264 - Plastic and nonmetallic article shaping or treating: processes