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.
Company Filing History:
1. Bochumer Eisenhutte Heintzmann & Company (1 from 26 patents)
1 patent:
1. 3949562 - Apparatus for preventing cave-ins of excavations