Duane Preston

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New Prague, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Float-type shut off device for a cryogenic storage tank
- Patent number 5,787,942
- Issue date Aug 4, 1998
- MVE, Inc.
- Duane Preston
- F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information Patent Grant
Self-contained liquid natural gas filling station
- Patent number 5,682,750
- Issue date Nov 4, 1997
- MVE Inc.
- Duane Preston
- F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information Patent Grant
Metering apparatus for cryogenic liquids
- Patent number 5,616,838
- Issue date Apr 1, 1997
- MVE, Inc.
- Duane Preston
- F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information Patent Grant
High temperature resistant thermal insulation for cryogenic tanks
- Patent number 5,542,255
- Issue date Aug 6, 1996
- Minnesota Valley Engineering, Inc.
- Duane Preston
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
LNG delivery system
- Patent number 5,421,162
- Issue date Jun 6, 1995
- Minnesota Valley Engineering, Inc.
- Keith Gustafson
- F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information Patent Grant
Pressure building circuit for a container for low temperature fluids
- Patent number 4,947,651
- Issue date Aug 14, 1990
- Minnesota Valley Engineering, Inc.
- Timothy Neeser
- F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS