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Purdy Proportioners, Ltd.
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Belmont, WI, US
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Patents Grants
last 30 patents
Information
Patent Grant
Liquid proportioner with filtering system
Patent number
4,830,220
Issue date
May 16, 1989
Purdy Proportioners, Ltd.
James H. Finnell
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Liquid proportioner for mixing two liquids in a predetermined ratio
Patent number
4,193,516
Issue date
Mar 18, 1980
Purdy Proportioners, Ltd.
Chester A. Purdy
G05 - CONTROLLING REGULATING
Patents Applications
last 30 patents
Trademark
last 30 trademarks
Information
Trademark
74069285 - PURDY
Serial number
74069285
Registration number
1680117
Filing date
Jun 15, 1990
Purdy Proportioners, Ltd.
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments