1819850

Information

• Patent Grant
• 1819850

• References
• Source

• Patent Number

  1,819,850

• Date Filed

  Not available

• Date Issued

  Tuesday, August 18, 1931
  93 years ago

• CPC

  • E21B10/62 - characterised by parts
  • Y10T279/17982 - Molded or cast-in tang

• US Classifications

  • 279 - Chucks or sockets
  • 076 - Metal tools and implements, making
  • 175 - Boring or penetrating the earth