1720838

Information

• Patent Grant
• 1720838

• References
• Source

• Patent Number

  1,720,838

• Date Filed

  Not available

• Date Issued

  Tuesday, July 16, 1929
  95 years ago

• CPC

  • E05B35/083 - with changeable combination
  • Y10T70/5327 - Keeper interlocking
  • Y10T70/7497 - Tumblerless warded
  • Y10T70/7503 - Tumbler and ward type
  • Y10T70/7593 - Sliding tumblers
  • Y10T70/7734 - Automatically key set combinations
  • Y10T70/7791 - Keys
  • Y10T70/7893 - Permutation

• US Classifications

  • 070 - Locks