Louis A. Frey

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Greensboro, NC, US

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Patents Grantslast 30 patents

Information Patent Grant
Powder spray color change system
- Patent number 4,248,379
- Issue date Feb 3, 1981
- Nordson Corporation
- Thomas E. Hollstein
- B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...