1800339

Information

• Patent Grant
• 1800339

• References
• Source

• Patent Number

  1,800,339

• Date Filed

  Not available

• Date Issued

  Tuesday, April 14, 1931
  94 years ago

• CPC

  • B21J7/08 - with rigidly-guided hammer

• US Classifications

  • 072 - Metal deforming
  • 409 - Gear cutting, milling, or planing