Growing community of inventors

Lancaster, PA, United States of America

James D Diffenderfer

Average Co-Inventor Count = 3.00

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 = 64

James D DiffenderferRobert L Arnold (1 patent)James D DiffenderferKenneth J Taggart, Sr (1 patent)James D DiffenderferJames D Diffenderfer (1 patent)Robert L ArnoldRobert L Arnold (34 patents)Kenneth J Taggart, SrKenneth J Taggart, Sr (8 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Easco Hand Tools, Inc. (1 from 75 patents)


1 patent:

1. 5199335 - Flex-head tool with locking feature

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1/11/2026
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