Douglas Hardesty

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East Lyme, CT, US

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Patents Grantslast 30 patents

Information Patent Grant
Plastic septic tank having layered composite wall
- Patent number 8,151,999
- Issue date Apr 10, 2012
- Infiltrator Systems, Inc.
- Roy E. Moore, Jr.
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Leaching chamber having a diagonally ribbed top
- Patent number 7,914,231
- Issue date Mar 29, 2011
- Infiltrator Systems, Inc.
- Bryan A. Coppes
- E03 - WATER SUPPLY SEWERAGE
Information Patent Grant
Corrugated leaching chamber
- Patent number D630294
- Issue date Jan 4, 2011
- Infiltrator Systems, Inc.
- Douglas S. Hardesty
- D23 - Environmental heating and cooling

Patents Applicationslast 30 patents

Information Patent Application
Leaching chamber having a diagonally ribbed top
- Publication number 20080226394
- Publication date Sep 18, 2008
- Bryan A. Coppes
- E03 - WATER SUPPLY SEWERAGE