Capacitor type differential pressure switch

• US 2,753,515 A
• Filed: 09/03/1952
• Issued: 07/03/1956
• Est. Priority Date: 09/03/1952
• Status: Expired due to Term

• Current Assignee: Edward J. Rickner
• Original Assignee: Edward J. Rickner
• Inventors: Rickner, Edward J.
• Application Number:
  US03/307,729
• Time in Patent Office: 1,399 Days
• US Class Current: 73/718
• CPC Class Codes: G01L 9/0072 using variations in capacitance
• CPC Class Codes: G01L 9/12 by making use of variations in capacitance , i.e. electric circuits therefor

Claims