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Wauwatosa, WI, United States of America

Randall Ammentorp

Average Co-Inventor Count = 4.00

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 = 11

Randall AmmentorpBryce Metcalf (4 patents)Randall AmmentorpElizabeth Woytach (4 patents)Randall AmmentorpRodney John Balzar (2 patents)Randall AmmentorpChris Martinek (2 patents)Randall AmmentorpGlen Stroik (2 patents)Randall AmmentorpRandall Ammentorp (4 patents)Bryce MetcalfBryce Metcalf (5 patents)Elizabeth WoytachElizabeth Woytach (4 patents)Rodney John BalzarRodney John Balzar (5 patents)Chris MartinekChris Martinek (2 patents)Glen StroikGlen Stroik (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Briggs & Stratton, LLC (4 from 782 patents)


4 patents:

1. 12168188 - Quick oil change filter and assembly

2. D990645 - Oil filter

3. 11571640 - Quick oil change filter and assembly

4. D920470 - Oil filter

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as of
1/19/2026
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