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Patents Grantslast 30 patents

Information Patent Grant
Kiln construction
- Patent number 4,659,356
- Issue date Apr 21, 1987
- PPG Industries, Inc.
- Robert A. Lawhon
- F27 - FURNACES KILNS OVENS RETORTS
Information Patent Grant
3021127
- Patent number 3,021,127
- Issue date Feb 13, 1962
- F27 - FURNACES KILNS OVENS RETORTS
Information Patent Grant
2475754
- Patent number 2,475,754
- Issue date Jul 12, 1949
- F27 - FURNACES KILNS OVENS RETORTS
Information Patent Grant
2165128
- Patent number 2,165,128
- Issue date Jul 4, 1939
- F27 - FURNACES KILNS OVENS RETORTS
Information Patent Grant
1995948
- Patent number 1,995,948
- Issue date Mar 26, 1935
- F27 - FURNACES KILNS OVENS RETORTS
Information Patent Grant
1964344
- Patent number 1,964,344
- Issue date Jun 26, 1934
- F27 - FURNACES KILNS OVENS RETORTS
Information Patent Grant
1885845
- Patent number 1,885,845
- Issue date Nov 1, 1932
- F27 - FURNACES KILNS OVENS RETORTS