Ryan M. Duffek

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Peterborough, GB

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Patents Grantslast 30 patents

Information Patent Grant
System for treating exhaust gas
- Patent number 8,083,822
- Issue date Dec 27, 2011
- Caterpillar Inc.
- Loran Hoffman
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Engine exhaust treatment device housing
- Patent number D645882
- Issue date Sep 27, 2011
- Caterpillar Inc.
- Ryan M Duffek
- D15 - Machines not elsewhere specified
Information Patent Grant
Engine exhaust treatment device housing
- Patent number D645477
- Issue date Sep 20, 2011
- Caterpillar Inc.
- Ryan M Duffek
- D15 - Machines not elsewhere specified

Patents Applicationslast 30 patents

Information Patent Application
SYSTEM FOR TREATING EXHAUST GAS
- Publication number 20090223212
- Publication date Sep 10, 2009
- Caterpillar Inc.
- Loran Hoffman
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES