71447501
Oct 2, 1941
Aug 11, 1942
Wet Process Porcelain High Tension Electric Insulators, Having Ratings from a Minimum of 4 Kilovolts to Maximum Possible Voltages, Wet Flashover from a Minimum of 12 Kilovolts to the Maximum Possible Wet Flashover Voltages, and Dry Flashover from a Minimum of 23 Kilovolts to the Maximum Possible Dry Flashover Voltages
Housewares and Glass