2224658

Information

• Patent Grant
• 2224658

• References
• Source

• Patent Number

  2,224,658

• Date Filed

  Not available

• Date Issued

  Tuesday, December 10, 1940
  84 years ago

• CPC

  • E01B27/14 - Manual tools or hand-held power tools therefor
  • E02D3/08 - by inserting stones or lost bodies

• US Classifications

  • 104 - Railways