Coaxial impellers

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Patents Grantslast 30 patents

Information Patent Grant
Heat exchanger assembly
- Patent number 4,437,512
- Issue date Mar 20, 1984
- Harsco Corporation
- Robert F. DeVore
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
3275071
- Patent number 3,275,071
- Issue date Sep 27, 1966
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
2856162
- Patent number 2,856,162
- Issue date Oct 14, 1958
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Grant
1991194
- Patent number 1,991,194
- Issue date Feb 12, 1935
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Grant
1885371
- Patent number 1,885,371
- Issue date Nov 1, 1932
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Grant
1799039
- Patent number 1,799,039
- Issue date Mar 31, 1931
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Grant
1778732
- Patent number 1,778,732
- Issue date Oct 21, 1930
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Grant
1762272
- Patent number 1,762,272
- Issue date Jun 10, 1930
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Grant
1576833
- Patent number 1,576,833
- Issue date Mar 16, 1926
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Grant
1306976
- Patent number 1,306,976
- Issue date Jun 17, 1919
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
604013
- Patent number 604,013
- Issue date May 17, 1898
- F24 - HEATING RANGES VENTILATING