Growing community of inventors

St. Louis, MO, United States of America

Charles R Holland

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 = 2

Charles R HollandCarl L Vogt (1 patent)Charles R HollandCharles R Holland (1 patent)Carl L VogtCarl L Vogt (4 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Coin Acceptors, Inc. (1 from 89 patents)


1 patent:

1. 4399902 - Coin-handling escrow assembly

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as of
12/13/2025
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