Average Co-Inventor Count = 2.40
ph-index = 1
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 (1 from 1,246 patents)
2. International Computers Limited (1 from 247 patents)
2 patents:
1. D247588 - Cash register or similar article
2. D243712 - Automatic mailing machine for moistening, sealing and stamping envelopes