John S. Campbell

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Indianapolis, IN, US

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Patents Grantslast 30 patents

Information Patent Grant
Optical scan pattern generating arrangement for a laser scanner
- Patent number 4,861,973
- Issue date Aug 29, 1989
- Spectra-Physics, Inc.
- Ronald A. Hellekson
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Shallow bar code scanner
- Patent number 4,799,164
- Issue date Jan 17, 1989
- Spectra-Physics, Inc.
- Ronald A. Hellekson
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Multiple lever apparatus for positioning an optical element
- Patent number 4,442,524
- Issue date Apr 10, 1984
- Spectra-Physics, Inc.
- Dennis J. Reeder
- G02 - OPTICS