Average Co-Inventor Count = 1.67
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.
Company Filing History:
1. Dbt Bergbau-service Gmbh (1 from 1 patent)
2. Strebtechnik Bochum Gmbh & Co. (1 from 1 patent)
2 patents:
1. 7476058 - Mining roof support frame with base skids lifting device
2. 5190414 - Walking prop for mine tunnels