Average Co-Inventor Count = 2.00
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. Acme United Corporation (6 from 175 patents)
6 patents:
1. D512097 - Beam compass
2. 6964103 - Retractable point compass
3. D502115 - Protractor with movable arm
4. D495264 - Pick up ruler
5. D492721 - Retractable point compass
6. D490729 - Protractor