1826579

Information

• Patent Grant
• 1826579

• References
• Source

• Patent Number

  1,826,579

• Date Filed

  Not available

• Date Issued

  Tuesday, October 6, 1931
  93 years ago

• CPC

  • H05G1/28 - Measuring or recording actual exposure time Counting number of exposures Measuring required exposure time

• US Classifications

  • 378 - X-ray or gamma ray systems or devices
  • 200 - Electricity: circuit makers and breakers
  • 315 - Electric lamp and discharge devices: systems
  • 324 - Electricity: measuring and testing
  • 335 - Electricity: magnetically operated switches, magnets, and electromagnets
  • 340 - Communications: electrical
  • 377 - Electrical pulse counters, pulse dividers, or shift registers: circuits and systems