3621688

Information

• Patent Grant
• 3621688

• References
• Source

• Patent Number

  3,621,688

• Date Filed

  Not available

• Date Issued

  Tuesday, November 23, 1971
  53 years ago

• CPC

  • E05B27/0053 - for use with more than one key
  • E05B19/0047 - with substantially circular or star-shape cross-section
  • Y10T70/5513 - By manipulator
  • Y10T70/7565 - Plural tumbler sets
  • Y10T70/7701 - Pin
  • Y10T70/7757 - Push or pull key operation
  • Y10T70/7847 - Round rigid
  • Y10T70/8054 - With recorder

• US Classifications

  • 070 - Locks
  • 235 - Registers
  • 346 - Recorders