Growing community of inventors

Etters, PA, United States of America

Marlin E Clark

Average Co-Inventor Count = 2.45

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 = 59

Marlin E ClarkHorst T Kaufhold (2 patents)Marlin E ClarkV Terrey Hawthorne (2 patents)Marlin E ClarkJay P Monaco (2 patents)Marlin E ClarkJohn J Steffen (2 patents)Marlin E ClarkJulius I Pershwitz (2 patents)Marlin E ClarkJohn F Deppen (2 patents)Marlin E ClarkRonald E Barker (2 patents)Marlin E ClarkCharles E Burkhart (2 patents)Marlin E ClarkMarlin E Clark (3 patents)Horst T KaufholdHorst T Kaufhold (29 patents)V Terrey HawthorneV Terrey Hawthorne (20 patents)Jay P MonacoJay P Monaco (11 patents)John J SteffenJohn J Steffen (10 patents)Julius I PershwitzJulius I Pershwitz (5 patents)John F DeppenJohn F Deppen (4 patents)Ronald E BarkerRonald E Barker (3 patents)Charles E BurkhartCharles E Burkhart (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Amsted Industries Inc. (2 from 317 patents)

2. Amsted Rail Company, Inc. (1 from 139 patents)


3 patents:

1. 10189488 - Railway freight car draft gear assembly

2. 6681943 - Railcar draft gear assembly and system

3. 6446820 - Railcar draft gear assembly and system

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as of
1/11/2026
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