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Bradley D. Helzer
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Ontario, CA
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Patents Grants
last 30 patents
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Patent Grant
Internal particulate protective obstruction for sprinklers
Patent number
7,434,747
Issue date
Oct 14, 2008
Rain Bird Corporation
Bradley D. Helzer
B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
Patents Applications
last 30 patents
Information
Patent Application
Internal particulate protective obstruction for sprinklers
Publication number
20060091236
Publication date
May 4, 2006
Rain Bird Corporation
Bradley D. Helzer
B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...