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Shawn Shirvan
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San Diego, CA, US
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last 30 patents
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Patent Grant
Drip irrigation hose and method of its manufacture
Patent number
5,855,324
Issue date
Jan 5, 1999
T-Systems International, Inc.
Michael DeFrank
A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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Patent Grant
Drip irrigation hose and method of its manufacture
Patent number
5,722,601
Issue date
Mar 3, 1998
T-Systems International, Inc.
Michael DeFrank
A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING