3512175

Information

• Patent Grant
• 3512175

• References
• Source

• Patent Number

  3,512,175

• Date Filed

  Not available

• Date Issued

  Tuesday, May 12, 1970
  54 years ago

• CPC

  • G07C1/08 - wherein the time is indicated by marking an element

• US Classifications

  • 346 - Recorders