Average Co-Inventor Count = 2.31
ph-index = 4
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. Johnson Level & Tool Mfg. Co., Inc. (5 from 85 patents)
5 patents:
1. D735063 - Level
2. D735062 - Level
3. D735065 - Level with electronic display
4. D735064 - Level with electronic display
5. D723955 - Electronic torpedo level