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US 2,874,714 A
Filed
: 03/04/1953
Issued
: 02/24/1959
Est. Priority Date
: 03/04/1953
Status: Expired due to Term
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Current Assignee
Francis X. Levy
,
Norvin L. Pellerin
Original Assignee
Francis X. Levy
,
Norvin L. Pellerin
Inventors
Pellerin, Norvin L.
,
Levy, Francis X.
Application Number
US03/340,324
Time in Patent Office
2,183 Days
Field of Search
US Class Current
137/93
CPC Class Codes
D06F 2103/22
Content of detergent or add...
D06F 2105/02
Water supply
D06F 2105/08
Draining of washing liquids
D06F 2105/42
Detergent or additive supply
D06F 34/22
Condition of the washing li...
G05D 11/138
by sensing the concentratio...
Y10T 137/034
Controlled by conductivity ...
Y10T 137/2509
By optical or chemical prop...
Y10T 137/729
Washing machine cycle control
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