Growing community of inventors

Steyr, Austria

Erwin Derntl

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 = 8

Erwin DerntlJohann Lumplecker (2 patents)Erwin DerntlErwin Derntl (2 patents)Johann LumpleckerJohann Lumplecker (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Steyr-Daimler-Puch Ag (2 from 182 patents)


2 patents:

1. 616400 - Repeating rifle with magazine adapter

2. 6164000 - Repeating rifle with magazine adapter

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1/11/2026
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