Average Co-Inventor Count = 1.64
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. General Signal Corporation (2 from 786 patents)
2. Qonaar Corporation (1 from 14 patents)
3 patents:
1. 5225665 - Ticket originating and processing device for transit vehicle
2. 4730117 - Cash box identification system
3. 4380316 - Electronic interlock for a cash collection receptacle