Average Co-Inventor Count = 1.50
ph-index = 2
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. Raha-automaattiyhdistys (2 from 4 patents)
2. Raha-automaarriyhdistys (1 from 1 patent)
3 patents:
1. 5121919 - Game playing device
2. D277768 - Slot machine
3. 4487414 - Coin operated prize dispensing projecting game