David J. Churchill

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Grand Ledge, MI, US

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Patents Grantslast 30 patents

Information Patent Grant
Molding a leaching chamber sidewall
- Patent number 7,632,447
- Issue date Dec 15, 2009
- Infiltrator Systems, Inc.
- Daniel J. Swistak
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
Molding a leaching chamber sidewall
- Publication number 20060076714
- Publication date Apr 13, 2006
- Daniel J. Swistak
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
Leaching chamber with inward flaring sidewall perforations
- Publication number 20050074286
- Publication date Apr 7, 2005
- Daniel J. Swistak
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL