Average Co-Inventor Count = 4.00
ph-index = 6
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. Siemens Corporation (8 from 418 patents)
8 patents:
1. D272622 - Large telephone keyset
2. D269781 - Telephone busy lamp field console with display
3. D269675 - Telephone busy lamp field console
4. D269612 - Large telephone keyset with display
5. D269613 - Telephone with function keys
6. D269179 - Small telephone keyset
7. D269178 - Telephone with display
8. D269089 - Small telephone keyset with display