John R. MacGregor

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Ann Arbor, MI, US

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Patents Grantslast 30 patents

Information Patent Grant
Electrical discharge machine apparatus for reverse taper bores
- Patent number 7,964,817
- Issue date Jun 21, 2011
- AA EDM Corporation
- John MacGregor
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Electrical discharge machine apparatus with piezo-electric head
- Patent number 7,019,247
- Issue date Mar 28, 2006
- Ann Arbor Machine Company
- John MacGregor
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Electronic depth controller for EDM apparatus
- Patent number 4,510,365
- Issue date Apr 9, 1985
- Raycon Corporation
- John R. MacGregor
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Process control for electrical discharge machining apparatus
- Patent number 4,361,745
- Issue date Nov 30, 1982
- Raycon Corporation
- Gary F. Rupert
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
Electrical Discharge Machine Apparatus for Reverse Taper Bores
- Publication number 20080283504
- Publication date Nov 20, 2008
- John MacGregor
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR