401656

Information

• Patent Grant
• 401656

• References
• Source

• Patent Number

  401,656

• Date Filed

  Not available

• Date Issued

  Tuesday, April 16, 1889
  135 years ago

• CPC

  • B21J7/06 - Drop hammers

• US Classifications

  • 076 - Metal tools and implements, making
  • 072 - Metal deforming
  • 172 - Earth working