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Device for treating water and method
US 3,022,247 A
Filed
: 07/26/1957
Issued
: 02/20/1962
Est. Priority Date
: 07/26/1957
Status: Expired due to Term
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Current Assignee
Ernest E. Selby
,
Rufus R. Knapp
Original Assignee
Ernest E. Selby
,
Rufus R. Knapp
Inventors
Selby, Ernest E.
,
Knapp, Rufus R.
Application Number
US03/674,410
Time in Patent Office
1,670 Days
Field of Search
US Class Current
210/697
CPC Class Codes
B01F 21/22
using additional holders in...
C23F 11/184
Phosphorous, arsenic, antim...
Y10T 137/402
Distribution systems involv...
Y10T 137/4891
With holder for solid, flak...
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