John R. Stewart

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Jamul, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Stretch forming method for a sheet metal skin with convex and conca...
- Patent number 11,318,520
- Issue date May 3, 2022
- John Ralph Stewart
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Stretch forming method for a sheet metal skin segment having compou...
- Patent number 7,340,933
- Issue date Mar 11, 2008
- Rohr, Inc.
- John R. Stewart
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents

Information Patent Application
Stretch Forming Method for a Sheet Metal Skin with Convex and Conca...
- Publication number 20200206799
- Publication date Jul 2, 2020
- John Ralph Stewart
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
STRETCH FORMING METHOD FOR A SHEET METAL SKIN SEGMENT HAVING COMPOU...
- Publication number 20070186612
- Publication date Aug 16, 2007
- Rohr, Inc.
- John R. Stewart
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...