Howard Heil

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Downers Grove, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for water surge protection
- Patent number 8,555,911
- Issue date Oct 15, 2013
- Howard Heil
- E03 - WATER SUPPLY SEWERAGE
Information Patent Grant
Hydrant with improved drain mechanism
- Patent number 6,561,214
- Issue date May 13, 2003
- Howard Heil
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Method and apparatus for preventing ice formation in water towers
- Patent number 6,435,209
- Issue date Aug 20, 2002
- Howard Heil
- E03 - WATER SUPPLY SEWERAGE
Information Patent Grant
Method and apparatus for water surge protection and protection of f...
- Patent number 5,218,987
- Issue date Jun 15, 1993
- Howard W. Heil
- E03 - WATER SUPPLY SEWERAGE

Patents Applicationslast 30 patents

Information Patent Application
Method and Apparatus For Water Surge Protection
- Publication number 20090050211
- Publication date Feb 26, 2009
- Howard Heil
- E03 - WATER SUPPLY SEWERAGE
Information Patent Application
Hydrant with improved drain mechanism
- Publication number 20020144731
- Publication date Oct 10, 2002
- Howard Heil
- E03 - WATER SUPPLY SEWERAGE