David A. Butler

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Macungie, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for maintenance of slush mixture at desired le...
- Patent number 5,220,801
- Issue date Jun 22, 1993
- Air Products and Chemicals, Inc.
- David A. Butler
- F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS