Average Co-Inventor Count = 2.26
ph-index = 3
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. The Charles Machine Works, Inc. (4 from 364 patents)
4 patents:
1. D930713 - Vacuum excavator hose handle
2. D851688 - Horizontal directional drill
3. D851132 - Horizontal directional drill
4. D771152 - Joystick