Average Co-Inventor Count = 1.00
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. Simplex Time Recorder Co. (3 from 52 patents)
3 patents:
1. D299316 - Clock
2. D265802 - Annunciator
3. D257234 - Digital clock