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Convect Trademarks
CONVECTRON
TUBES ENCLOSING HEATER ELEMENTS SURROUNDED BY A FLUID MEDIUM, IN WHICH VARIATIONS IN THE CONVECTION CURRENTS IN THE FLUID MEDIUM CHANGES THE OHMIC VALUE OF THE ELEMENTS
Expired
·
April 1, 1947
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71519918
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CONVECTUBE
TUBING AND DUCTWORK FOR THE DISTRIBUTION OF AIR
Cancelled
·
November 28, 1986
·
73632963
·
CONVECTURE
Cooking oven for commercial and domestic use
Registered
·
December 1, 2003
·
78334658
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