Average Co-Inventor Count = 2.78
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. M&r Marking Systems, Inc. (4 from 43 patents)
2. At+t Corp. (3 from 4,208 patents)
3. At&t Bell Laboratories (1 from 3,345 patents)
4. Readycom, Inc. (1 from 1 patent)
9 patents:
1. D426569 - Hand stamp
2. D413619 - Case for a self-inking stamp
3. D406834 - Communication handset
4. D367292 - Hand stamp handle
5. D367290 - Self-inking stamp
6. D365821 - Personal information center telephone set
7. D355186 - Telephone answering machine
8. D355187 - Telephone answering machine
9. D345976 - Telephone base