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Lafayette, CA, United States of America

James A Marquis

Average Co-Inventor Count = 3.00

ph-index = 1

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 21

James A MarquisPaul K Davis (1 patent)James A MarquisRobert E Miller (1 patent)James A MarquisJames A Marquis (1 patent)Paul K DavisPaul K Davis (12 patents)Robert E MillerRobert E Miller (9 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Pacific Roller Die Company, Inc. (1 from 16 patents)


1 patent:

1. 6339945 - Apparatus for forming tapered spiral tubes

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as of
12/17/2025
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