Growing community of inventors

Coppell, TX, United States of America

Mark O Prestjohn

Average Co-Inventor Count = 4.00

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 = 7

Mark O Prestjohn ↔ John A Cunningham (1 patent)Mark O Prestjohn ↔ Bobby P Reed (1 patent)Mark O Prestjohn ↔ Martin D Smith (1 patent)Mark O PrestjohnMark O Prestjohn (1 patent)John A CunninghamJohn A Cunningham (2 patents)Bobby P ReedBobby P Reed (1 patent)Martin D SmithMartin D Smith (1 patent)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Jamieson Film Company (1 from 2 patents)


1 patent:

1. 4929976 - Film transport system

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12/15/2025
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