Average Co-Inventor Count = 2.68
ph-index = 5
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. Zenith Radio Corporation (5 from 476 patents)
2. Zenith Electronics Corporation (1 from 948 patents)
3. National Presto Industries, Inc. (1 from 185 patents)
7 patents:
1. D393637 - Television set top decoder box
2. D275952 - Television receiver cabinet
3. D275953 - Television receiver cabinet
4. D270157 - Telephone handset
5. D268758 - Combined telephone and clock radio
6. D256019 - Hot air corn popper
7. D244961 - Combined phonograph and stereo receiver