Average Co-Inventor Count = 3.24
ph-index = 8
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 (12 from 418 patents)
12 patents:
1. D277478 - Telephone attendant console
2. D277477 - Telephone busy lamp field console
3. D277476 - Telephone digital data interface console
4. D272622 - Large telephone keyset
5. D269781 - Telephone busy lamp field console with display
6. D269675 - Telephone busy lamp field console
7. D269612 - Large telephone keyset with display
8. D269613 - Telephone with function keys
9. D269179 - Small telephone keyset
10. D269178 - Telephone with display
11. D269089 - Small telephone keyset with display
12. 4375584 - Modular telephone keyset structure