Average Co-Inventor Count = 3.43
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.
Company Filing History:
1. Allis-chalmers Corporation (2 from 532 patents)
2 patents:
1. D275199 - Tractor cab
2. 4185867 - Harvester with a laterally extending visor structure