3679902

Information

• Patent Grant
• 3679902

• References
• Source

• Patent Number

  3,679,902

• Date Filed

  Not available

• Date Issued

  Tuesday, July 25, 1972
  52 years ago

• CPC

  • H05G1/28 - Measuring or recording actual exposure time Counting number of exposures Measuring required exposure time
  • H05G1/44 - in which the switching instant is determined by measuring the amount of radiation directly

• US Classifications

  • 378 - X-ray or gamma ray systems or devices