Ronald L. DeWall

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Loretto, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Ice block press
- Patent number 5,069,044
- Issue date Dec 3, 1991
- PRR Industries, Inc.
- Ronald L. Holum
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...