John D. Watson

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Caseville, MI, US

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Patents Grantslast 30 patents

Information Patent Grant
Shield for pyrometric cones used in ceramic firing kilns
- Patent number 4,060,381
- Issue date Nov 29, 1977
- Evenheat Kiln, Inc.
- John C. Watson
- F27 - FURNACES KILNS OVENS RETORTS