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US 3,386,462 A
Filed
: 06/14/1965
Issued
: 06/04/1968
Est. Priority Date
: 06/14/1965
Status: Expired due to Term
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Current Assignee
Walters, William R.
Original Assignee
Walters, William R.
Inventors
Walters, William R.
Application Number
US04/463,694
Time in Patent Office
1,086 Days
Field of Search
US Class Current
137/244
CPC Class Codes
G05D 9/02
without auxiliary power
Y10T 137/4336
Cleaning member reciprocate...
Y10T 137/7349
In communicating measuring ...
Y10T 137/7374
Flexible diaphragm valve
Y10T 137/7472
Vertical inlet riser
Y10T 137/777
Spring biased
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