Growing community of inventors

Sherrill, IA, United States of America

Herbert Francis Sigwarth

Average Co-Inventor Count = 2.00

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 = 5

Herbert Francis SigwarthRichard Lukens Cade (1 patent)Herbert Francis SigwarthHerbert Francis Sigwarth (1 patent)Richard Lukens CadeRichard Lukens Cade (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Deere + Company (1 from 8,451 patents)


1 patent:

1. 4008917 - Seat safety bar

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12/13/2025
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