Clogged filter indicator

• US 3,027,865 A
• Filed: 01/06/1959
• Issued: 04/03/1962
• Est. Priority Date: 01/06/1959
• Status: Expired due to Term

• Current Assignee: Murrell F. Kautz, Olson, Elwyn H.
• Original Assignee: Murrell F. Kautz, Olson, Elwyn H.
• Inventors: Kautz, Murrell F., Olson, Elwyn H.
• Application Number:
  US03/785,212
• Time in Patent Office: 1,183 Days
• US Class Current: 116/268
• CPC Class Codes: B01D 46/0086 Filter condition indicators
• CPC Class Codes: F02M 35/09 Clogging indicators ; Diagnosis or testing of air cleaners sensors therefore F02M35/10373
• CPC Class Codes: F24F 13/28 Arrangement or mounting of filters
• CPC Class Codes: Y10S 116/42 Oil filter
• CPC Class Codes: Y10S 55/34 Indicator and controllers

Claims