Robert M. Columbus

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Centerville, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Method for electromagnetically joining tubes to sheets in a tubular...
- Patent number 6,857,185
- Issue date Feb 22, 2005
- IAP Research, Inc.
- John P. Barber
- F28 - HEAT EXCHANGE IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
System and method for joining tubes to sheets in a tubular heat tra...
- Publication number 20040231157
- Publication date Nov 25, 2004
- Elliott Tool Technologies Ltd.
- John P. Barber
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Application
System and method for joining tubes to sheets in a tubular heat tra...
- Publication number 20030218333
- Publication date Nov 27, 2003
- Elliott Tool Technologies Ltd.
- John P. Barber
- F28 - HEAT EXCHANGE IN GENERAL