1939067

Information

• Patent Grant
• 1939067

• References
• Source

• Patent Number

  1,939,067

• Date Filed

  Not available

• Date Issued

  Tuesday, December 12, 1933
  91 years ago

• CPC

  • G01L23/06 - Indicating or recording by optical means
  • G01L23/125 - by changing capacitance
  • G01L23/28 - Cooling means
  • G01L23/32 - Apparatus specially adapted for recording pressure changes measured by indicators

• US Classifications

  • 073 - Measuring and testing
  • 340 - Communications: electrical
  • 361 - Electricity: electrical systems and devices