Growing community of inventors

Hartland, WI, United States of America

David Spence

Average Co-Inventor Count = 1.00

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 = 0

David Spence ↔ Matthiew John Schleis (1 patent)David Spence ↔ Brandon Gramoll (1 patent)David Spence ↔ Phillip Wyman (1 patent)David SpenceDavid Spence (1 patent)Matthiew John SchleisMatthiew John Schleis (2 patents)Brandon GramollBrandon Gramoll (1 patent)Phillip WymanPhillip Wyman (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Enerpac Tool Group Corp. (1 from 20 patents)


1 patent:

1. D1105877 - Column member for a pin puller tool assembly

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1/9/2026
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