Signals and indicators – Indicators – Chemically activated type
Patent
1978-04-04
1979-10-09
Swisher, S. Clement
Signals and indicators
Indicators
Chemically activated type
339113R, G01K 1112
Patent
active
041701909
ABSTRACT:
A method of detecting an excessive temperature at electrical wiring devices and detector for indicating by means of a color change an electrical failure at a wiring device which failure results in an excessive temperature increase.
REFERENCES:
patent: 1693369 (1928-11-01), Cochran
patent: 1924793 (1933-08-01), Laske
patent: 3877411 (1975-04-01), MacDonald
Maier, III John
Swisher S. Clement
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