Growing community of inventors

Sheboygan, WI, United States of America

Bruce A Stump

Average Co-Inventor Count = 2.00

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 = 91

Bruce A StumpGary L Hatch (2 patents)Bruce A StumpBruce A Stump (2 patents)Gary L HatchGary L Hatch (10 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Plymouth Products, Inc. (2 from 9 patents)


2 patents:

1. 6117332 - Method for using a center core cartridge feeder insert

2. 5897770 - Center core cartridge feeder insert

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as of
1/8/2026
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