Average Co-Inventor Count = 1.20
ph-index = 3
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. Lgz Landis Gyr Zug Ag (3 from 109 patents)
3 patents:
1. 4280037 - Apparatus for cashless payment of merchandise or services
2. 4266122 - Method and apparatus for identification of documents
3. 4172554 - Apparatus for storing and reading data