Average Co-Inventor Count = 1.20
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. Other (3 from 832,843 patents)
3 patents:
1. 4201434 - Photographic extension flash cord
2. 4183644 - Photographic background device
3. 4146918 - Photographic flash reflector and diffuser system