Aquarium heater

Details Aquarium heater Aquarium heater

1989-07-26

1991-10-15

Envall, Jr., Roy N.

Electric resistance heating devices

Heating devices

Tank or container type liquid heater

119 5, 219385, 219542, H05B 386

Patent

active

050576674

ABSTRACT:
An aquarium heating system utilizes a conductive coating on an aquarium glass viewing window to heat the aquarium water. The conductive coating is transparent and is disposed on the surface of at least one viewing window. A voltage is supplied to the conductive coating under control of a power supply which operates to maintain the water at a constant temperature.

REFERENCES:
patent: 2883307 (1959-04-01), Orr
patent: 3272900 (1966-09-01), Ryan
patent: 3629554 (1971-12-01), Stewart
patent: 3842241 (1974-10-01), Isaacson
patent: 4820902 (1989-04-01), Gillery

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