1772953

Information

• Patent Grant
• 1772953

• References
• Source

• Patent Number

  1,772,953

• Date Filed

  Not available

• Date Issued

  Tuesday, August 12, 1930
  94 years ago

• CPC

  • B23B31/023 - for screw-threads
  • Y10T279/15 - Threaded grip
  • Y10T279/17965 - Drill type

• US Classifications

  • 279 - Chucks or sockets
  • 081 - Tools