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Dennis E. Bowman
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Ann Arbor, MI, US
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Patents Grants
last 30 patents
Information
Patent Grant
Reject water drain line installation system and apparatus for under...
Patent number
6,651,272
Issue date
Nov 25, 2003
Dennis E. Bowman
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Grant
Reject water drain line installation system and apparatus for under...
Patent number
6,193,879
Issue date
Feb 27, 2001
Eco-Tech, Inc.
Dennis E. Bowman
E03 - WATER SUPPLY SEWERAGE
Information
Patent Grant
Reject water drain line installation system and apparatus for under...
Patent number
5,944,985
Issue date
Aug 31, 1999
Dennis E. Bowman
E03 - WATER SUPPLY SEWERAGE
Information
Patent Grant
Refect water drain line installation system and apparatus for under...
Patent number
5,681,459
Issue date
Oct 28, 1997
Dennis E. Bowman
E03 - WATER SUPPLY SEWERAGE
Information
Patent Grant
Reject water drain line installation system and apparatus for under...
Patent number
5,635,058
Issue date
Jun 3, 1997
Dennis E. Bowman
E03 - WATER SUPPLY SEWERAGE
Information
Patent Grant
Reject water drain line installation system and apparatus for under...
Patent number
5,449,456
Issue date
Sep 12, 1995
Dennis E. Bowman
E03 - WATER SUPPLY SEWERAGE
Patents Applications
last 30 patents
Information
Patent Application
Reject water drain line installation system and apparatus for under...
Publication number
20030024568
Publication date
Feb 6, 2003
Dennis E. Bowman
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL