Average Co-Inventor Count = 4.00
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. Johnson Level & Tool Mfg. Co., Inc. (2 from 85 patents)
2. Hultafors Group North America, Inc. (1 from 1 patent)
3 patents:
1. D1060065 - Dot-type laser level
2. D1026688 - Line-type laser level
3. D1026689 - Rotary-type laser level