1
Donald W Hutchison: Binary encoded multiple frequency RF indentification tag. Checkpoint Systems, Panitch Schwarze Jacobs & Nadel, June 8, 1993: US05218189 (139 worldwide citation)

A tag for identifying an item to which it is attached includes an inductance connected in parallel with a capacitance. The capacitance includes a plurality of individual capacitors, each of a predetermined different capacitance. The individual capacitors are connected to the inductance to establish ...


2
Donald W Hutchison, Steven A Kimmel, Raymond J Bonkovich, James P Chew, David J Rath: Fuel control system throttle valve unit therefor and methods of making the same. Robertshaw Controls Company, Candor Candor & Tassone, March 5, 1991: US04997161 (14 worldwide citation)

A fuel control system, throttle valve unit therefor and methods of making the same are provided, the system comprising a burner, a source of fuel for the burner, and a throttle valve unit for interconnecting the source to the burner, the throttle valve unit having a movable valve member and a valve ...


3
John C Stein, Donald W Hutchison: Temperature probe for air conditioning device. Essex Group, Stephen A Schneeberger, September 14, 1982: US04348870 (9 worldwide citation)

A temperature probe for use with an air conditioning device of the type including a heat exchanger subject to possible freeze-up, such as an evaporator tube array. The probe includes a substantially rigid support member having an elongated portion with a temperature sensor mounted thereto, as within ...


4
Donald W Hutchison, Steven A Kimmel, Raymond J Bonkovich, James P Chew, David J Rath: Fuel control system, throttle valve unit therefor and methods of making the same. Robertshaw Controls Company, Candor Candor & Tassone, May 1, 1990: US04921210 (3 worldwide citation)

A fuel control system, throttle valve unit therefor and methods of making the same are provided, the system comprising a burner, a source of fuel for the burner, and a throttle valve unit for interconnecting the source to the burner, the throttle valve unit having a movable valve member and a valve ...