Average Co-Inventor Count = 2.29
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. Hallmark Cards, Inc. (2 from 233 patents)
2. Preco Industries, Inc. (2 from 25 patents)
4 patents:
1. 11499706 - Apparatus for producing light and sound
2. D782103 - Cover for an illumination device
3. 5901646 - Screen printing machine having three axes screen registration with
4. 5777878 - Screen printing press having longitudinal, lateral and angular screen