Average Co-Inventor Count = 2.50
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. Allegheny International Exercise Co. (2 from 8 patents)
2. The Perfection Manufacturing Company (1 from 12 patents)
3 patents:
1. 4602781 - Dual action exercise cycle
2. D280226 - Exercise cycle
3. D280227 - Exercise cycle