2493346

Information

• Patent Grant
• 2493346

• References
• Source

• Patent Number

  2,493,346

• Date Filed

  Not available

• Date Issued

  Tuesday, January 3, 1950
  75 years ago

• CPC

  • G01V5/101 - and detecting the secondary Y-rays produced in the surrounding layers of the bore hole
  • F27B2005/143 - Heating rods disposed in the chamber
  • F27B2005/164 - Air supply through a set of tubes with openings
  • F27B2005/169 - the atmosphere being continuously renewed by exterior means
  • Y10S131/905 - Radiation source for sensing condition or characteristic

• US Classifications

  • 250 - Radiant energy
  • 073 - Measuring and testing
  • 131 - Tobacco
  • 313 - Electric lamp and discharge devices
  • 346 - Recorders
  • 374 - Thermal measuring and testing