Electric heating – Heating devices – With heating unit structure
Patent
1988-01-15
1989-07-11
Walberg, Teresa J.
Electric heating
Heating devices
With heating unit structure
219203, 219522, H05B 336
Patent
active
048474720
ABSTRACT:
Discontinuities in an electrically heated transparency are detected by monitoring voltage differences between two areas of the heating circuit on the transparency.
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Millman Dennis G.
PPG Industries Inc.
Walberg Teresa J.
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