Average Co-Inventor Count = 2.50
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. Sielaff Gmbh & Co. (2 from 5 patents)
2. Sielaff Gmbh & Co. Automatenbau Herrieden (1 from 6 patents)
3 patents:
1. 4437557 - Coin collection for vending machines
2. 4323147 - Coin-operated dispensing device reflecting the selling price of items to
3. 4235351 - Merchandise dispensing device for a vending machine