Growing community of inventors

Marshalltown, IA, United States of America

Michael R Gerbo

Average Co-Inventor Count = 1.14

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 = 9

Michael R GerboDavid J Vavra (1 patent)Michael R GerboMichael R Gerbo (4 patents)David J VavraDavid J Vavra (1 patent)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Ritchie Industries, Inc. (4 from 16 patents)


4 patents:

1. 6668754 - Nipple valve waterer

2. D466586 - Nipple valve

3. 5709170 - Animal alignment guide for a nipple valve waterer

4. 5603286 - Animal alignment guide for a nipple valve waterer

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as of
12/19/2025
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