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. National Presto Industries, Inc. (3 from 185 patents)
3 patents:
1. 7635827 - Cooking apparatus with safety device
2. D456500 - Heater
3. D456067 - Parabolic heater