1878310

Information

• Patent Grant
• 1878310

• References
• Source

• Patent Number

  1,878,310

• Date Filed

  Not available

• Date Issued

  Tuesday, September 20, 1932
  92 years ago

• CPC

  • G09F23/16 - on clocks
  • G04B19/24386 - sheet-shaped

• US Classifications

  • 040 - Card, picture, or sign exhibiting
  • 968 - Horology