John Betts

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Modesto, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Temperature indicating device
- Patent number 6,422,171
- Issue date Jul 23, 2002
- Deltatrak, Inc.
- John Betts
- G01 - MEASURING TESTING
Information Patent Grant
Disengagement and retrieval mechanism for a record
- Patent number 4,990,940
- Issue date Feb 5, 1991
- Deltatrak, Inc.
- John Betts
- G01 - MEASURING TESTING