Average Co-Inventor Count = 2.18
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. Litton Business Systems, Inc. (4 from 70 patents)
4 patents:
1. D265208 - Calculator
2. D257512 - Calculator case
3. D248595 - Portable calculating machine
4. D248419 - Calculating machine