2158468

Information

• Patent Grant
• 2158468

• References
• Source

• Patent Number

  2,158,468

• Date Filed

  Not available

• Date Issued

  Tuesday, May 16, 1939
  86 years ago

• CPC

  • G04D7/1221 - with recording

• US Classifications

  • 346 - Recorders
  • 073 - Measuring and testing
  • 116 - Signals and indicators
  • 968 - Horology