1504138

Information

• Patent Grant
• 1504138

• References
• Source

• Patent Number

  1,504,138

• Date Filed

  Not available

• Date Issued

  Tuesday, August 5, 1924
  100 years ago

• CPC

  • G07C1/32 - Time-recording locks
  • Y10T70/8054 - With recorder
  • Y10T70/8135 - With register

• US Classifications

  • 070 - Locks
  • 346 - Recorders