15, 1884 patent by Leonard Henkle (which was purchased by Charles Upton for his Rochester lamps), even that patent was shaky. The primary change made by Perfection was using a wick sleeve to make changing wicks faster and easier. They could not patent the heater or wicks because heaters made by and using the same wick (without the wick sleeve) had been in use since the late 1880's. As a result, of the Perfection heater (and wick) were made and sold with the trade names Barler, Boss, New Process, Nesco, Tropical #015 Oil Heater, United States Stove Co.


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