Growing community of inventors

Des Moines, IA, United States of America

David R Frerking

Average Co-Inventor Count = 1.50

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 = 49

David R FrerkingHenry J Albright (2 patents)David R FrerkingDavid R Frerking (3 patents)Henry J AlbrightHenry J Albright (14 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Fawn Engineering Corporation (3 from 32 patents)


3 patents:

1. 4942290 - Dispensing machine having horizontal product carrier movable through an

2. D302281 - Vending machine cabinet

3. 4744490 - Table or like vending machine with customer operated anti-theft product

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as of
12/21/2025
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