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Berthoud, CO, United States of America

Keith Alan Marshall

Average Co-Inventor Count = 2.40

ph-index = 2

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 = 10

Keith Alan MarshallMark Andrew Stephens (2 patents)Keith Alan MarshallArthur Ray Roberts (1 patent)Keith Alan MarshallKeith Alan Marshall (2 patents)Mark Andrew StephensMark Andrew Stephens (11 patents)Arthur Ray RobertsArthur Ray Roberts (18 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. International Business Machines Corporation (2 from 164,275 patents)


2 patents:

1. 6897971 - Facsimile distribution manager

2. 6829707 - Method and system for downloading encrypted font scripts to a print server

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1/16/2026
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