2144847

Information

• Patent Grant
• 2144847

• References
• Source

• Patent Number

  2,144,847

• Date Filed

  Not available

• Date Issued

  Tuesday, January 24, 1939
  86 years ago

• CPC

  • G04D7/1221 - with recording
  • Y10T307/872 - Repetitive make and break

• US Classifications

  • 307 - Electrical transmission or interconnection systems
  • 341 - Coded data generation or conversion
  • 968 - Horology