1974-10-02
1976-02-17
Envall, Jr., R. N.
H03H 930
Patent
active
039393844
ABSTRACT:
An electronic timer switch capable of controlling the operation of a unit, such as an air conditioning apparatus, according to a preset time schedule even when the unit is switched on.
REFERENCES:
patent: 3688130 (1972-08-01), Granieri
patent: 3728588 (1973-04-01), Jones
patent: 3774082 (1973-11-01), Chang
patent: 3814948 (1974-06-01), Schuchmann et al.
Blumenthal David A.
Envall, Jr. R. N.
Iwatani & Co. Ltd.
Schwartz Arthur
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