Electric heater
Number of patents in Portfolio can not be more than 2000
United States of America
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Nov 12, 2024
Grant Date -
Apr 6, 2023
app pub date -
Oct 12, 2022
filing date -
Oct 12, 2022
priority date (Note) -
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Abstract
An electric heater includes a substrate and an inner plane heating element formed on one surface of the substrate. The inner plane heating element includes an inner pattern portion connecting a start point with an end point. The inner pattern portion includes a first track, a second track located outside the first track and spaced part from the first track, a first bridge connecting the first track with one end of the second track, a third track located outside the second track and spaced apart from the second track, and a second bridge connecting the other end of the second track with the third track. A first gap G1 between the first and second tracks is shorter than a second gap G2 between the second and third tracks along a virtual line crossing the first, second and third tracks and closer to the first bridge than the second bridge.
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