2198523

Information

• Patent Grant
• 2198523

• References
• Source

• Patent Number

  2,198,523

• Date Filed

  Not available

• Date Issued

  Tuesday, April 23, 1940
  84 years ago

• CPC

  • G01C9/18 - by using liquids
  • B64D2700/62219 - Electric safety devices

• US Classifications

  • 338 - Electrical resistors
  • 033 - Geometrical instruments