Growing community of inventors

Bruchsal, Germany

Joseph Kefer

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 = 1

Joseph KeferGerhard Ruf (1 patent)Joseph KeferJoseph Kefer (1 patent)Gerhard RufGerhard Ruf (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Dorina Nahmaschinen Gmbh (1 from 22 patents)


1 patent:

1. 4700645 - Sewing machine housing construction

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12/16/2025
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