Mark A. Ritchie

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Machesney Park, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Grinding machine with multi-spindle grinding head
- Patent number 8,801,503
- Issue date Aug 12, 2014
- Gleason Cutting Tools Corporation
- Roger L. Hackman
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
GRINDING MACHINE WITH MULTI-SPINDLE GRINDING HEAD
- Publication number 20130337726
- Publication date Dec 19, 2013
- GLEASON CUTTING TOOLS CORPORATION
- Roger L. Hackman
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
TOOL GRINDING MACHINE
- Publication number 20120129434
- Publication date May 24, 2012
- GLEASON CUTTING TOOLS CORPORATION
- Roger L. Hackman
- B24 - GRINDING POLISHING