Growing community of inventors

Prospect, KY, United States of America

John P Speigelhalter

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 = 18

John P SpeigelhalterGregory A Phillips (2 patents)John P SpeigelhalterDavid T Brutscher (2 patents)John P SpeigelhalterL R Leet, Sr (1 patent)John P SpeigelhalterL R Leet Sr (1 patent)John P SpeigelhalterJohn P Speigelhalter (2 patents)Gregory A PhillipsGregory A Phillips (14 patents)David T BrutscherDavid T Brutscher (12 patents)L R Leet, SrL R Leet, Sr (3 patents)L R Leet SrL R Leet Sr (1 patent)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Vermont American Corporation (2 from 71 patents)


2 patents:

1. D428899 - Combined miter fence and box joint fixture

2. 6095024 - Miter fence-box joint fixture

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as of
12/17/2025
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