2507916

Information

• Patent Grant
• 2507916

• References
• Source

• Patent Number

  2,507,916

• Date Filed

  Not available

• Date Issued

  Tuesday, May 16, 1950
  74 years ago

• CPC

  • F41J5/16 - Manually evaluating scores

• US Classifications

  • 340 - Communications: electrical
  • 250 - Radiant energy
  • 273 - Amusement devices: games
  • 356 - Optics: measuring and testing