1983426

Information

• Patent Grant
• 1983426

• References
• Source

• Patent Number

  1,983,426

• Date Filed

  Not available

• Date Issued

  Tuesday, December 4, 1934
  90 years ago

• CPC

  • B25G1/005 - for screwdrivers, wrenches or spanners with additional levers
  • B25B13/461 - with concentric driving and driven member
  • Y10S81/02 - Spiral drive for wrenches

• US Classifications

  • 081 - Tools