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Herman W. Griffin
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Mt. Juliet, TN, US
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Patents Grants
last 30 patents
Information
Patent Grant
Further enhanced features for backflow prevention device enclosure
Patent number
6,532,985
Issue date
Mar 18, 2003
Griffin & Cantrell Company, Inc.
Herman W. Griffin
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Cover for protecting piping assemblies with engagement rod
Patent number
6,311,720
Issue date
Nov 6, 2001
Griffin & Cantrell Company, Inc.
Herman W. Griffin
E03 - WATER SUPPLY SEWERAGE
Information
Patent Grant
Backflow prevention device enclosure having improved access
Patent number
6,293,301
Issue date
Sep 25, 2001
Griffin & Cantrell Company, Inc.
Herman W. Griffin
E03 - WATER SUPPLY SEWERAGE
Information
Patent Grant
Cover for protecting piping assemblies
Patent number
6,021,804
Issue date
Feb 8, 2000
Griffin & Cantrell Company, Inc.
Herman W. Griffin
E03 - WATER SUPPLY SEWERAGE
Information
Patent Grant
Enhanced features for backflow prevention device cover
Patent number
5,996,611
Issue date
Dec 7, 1999
Griffin & Cantrell Co., Inc.
Herman W. Griffin
E03 - WATER SUPPLY SEWERAGE
Information
Patent Grant
Drain channel and forms for backflow prevention device cover
Patent number
5,743,289
Issue date
Apr 28, 1998
Griffin & Cantrell Co., Inc.
Herman W. Griffin
E03 - WATER SUPPLY SEWERAGE
Information
Patent Grant
Elevated cover for backflow prevention device
Patent number
5,740,832
Issue date
Apr 21, 1998
Griffin & Cantrell Company, Inc.
Herman W. Griffin
E03 - WATER SUPPLY SEWERAGE
Patents Applications
last 30 patents
Information
Patent Application
Enhanced features for backflow prevention device enclosure
Publication number
20010018926
Publication date
Sep 6, 2001
Herman W. Griffin
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...