Title:
Method for controlling detergent concentration in dishwashing machines or the like
United States Patent 2687139
US Patent References:
Control method and apparatus
- - 1530833

/1806536.html
- - 1806536

Control method and apparatus
- - 1830333

Feeding means
- - 2057286

Cleaning apparatus
- - 2266205


Inventors:
Noble, Sidney G.
Woodrow, Clark E.
Publication Date:
08/24/1954
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Assignee:
BOIS CO INC DU
Primary Class:
137/5
Other Classes:
134/93, 134/57R, 134/191, 134/57D
International Classes:
A47L15/44
US Patent References:
2370609Concentration cell and temperature compensator
2376694Automatic diverter for sugar contaminated condensates
2377363Solution concentration control system
2490634Apparatus for controlling the concentration of solutions which tend to foam
2585059Electrical cell apparatus for detecting chemical characteristics of liquids