Growing community of inventors

Oregon City, OR, United States of America

Michael David Marshall

Average Co-Inventor Count = 2.00

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 = 10

Michael David MarshallRobert John Stalberger, Jr (1 patent)Michael David MarshallMichael David Marshall (1 patent)Robert John Stalberger, JrRobert John Stalberger, Jr (5 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Other (1 from 832,912 patents)


1 patent:

1. 3937470 - Game footbag

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1/13/2026
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