1244997

Information

• Patent Grant
• 1244997

• References
• Source

• Patent Number

  1,244,997

• Date Filed

  Not available

• Date Issued

  Tuesday, October 30, 1917
  107 years ago

• CPC

  • B21D39/12 - with rollers for expanding and flanging

• US Classifications

  • 072 - Metal deforming