Average Co-Inventor Count = 3.00
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. The Singer Company (2 from 1,246 patents)
2. At&t Technologies, Inc. (2 from 382 patents)
3. At&t Bell Laboratories (1 from 3,345 patents)
5 patents:
1. D284764 - Telephone cradle
2. D284471 - Telephone handset
3. D279185 - Stand for a telephone or similar article
4. D253705 - Sewing machine
5. D247496 - Sewing machine frame or similar article