Fred D. Pfening, Jr. Patents

Fred D. Pfening, Jr. was awarded several U.S. patents over his tenure at The Fred D. Pfening Company.

His design concepts are still incorporated into many Pfening systems today.

Liquid Measuring and Dispensing Apparatus
Liquid measuring and dispensing

Patent issue date:
September 9, 1930

Float Controlled Valve
Mechanism
Float Controlled Valve

Patent issue date:
July 11, 1933

Automatic Humidity Regulating Mechanism for Heating Systems
Automatic Humidity Regulating

Patent issue date:
September 5, 1933

Liquid
Measuring
Means
Liquid measurement

Patent issue date:
April 10, 1934

Mixing
Valve
Mixing valve

Patent issue date:
December 18, 1934

Air Conditioning
Apparatus
Air Conditioning Apparatus

Patent issue date:
April 25, 1939

Hopper
Construction
Hopper Construction

Patent issue date:
November 4, 1958

Method and Apparatus for Handling Flour
Flour Handling_0908

Patent issue date:
September 8, 1959

Method and Apparatus for Handling Flour
Flour handling_1117

Patent issue date:
November 17, 1959

Method and Apparatus for Handling Flour
Flour handling_1222

Patent issue date:
December 22, 1959

Scroll to Top