1988775

Information

• Patent Grant
• 1988775

• References
• Source

• Patent Number

  1,988,775

• Date Filed

  Not available

• Date Issued

  Tuesday, January 22, 1935
  90 years ago

• CPC

  • G05D23/1856 - with sensing element responsive to pressure or volume change in a confined fluid

• US Classifications

  • 236 - Automatic temperature and humidity regulation