Average Co-Inventor Count = 2.57
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. Star Headlight & Lantern Co., Inc. (3 from 66 patents)
3 patents:
1. D515558 - Combined handset and announcement and siren signal generator and control unit
2. D505351 - Combined handset and announcement and siren signal generator and control unit
3. D503644 - Electronic announcement and siren signal generator and control unit