JC

Joseph A. Crawford

AT Advance Transformer: 2 patents #4 of 11Top 40%
NP North American Philips: 2 patents #168 of 645Top 30%
📍 Cicero, IL: #26 of 102 inventorsTop 30%
🗺 Illinois: #21,447 of 84,256 inventorsTop 30%
Overall (All Time): #1,299,866 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
5013970 Peak voltage reducer circuit for fluorescent lamps 1991-05-07
4954749 Fluorescent lamp electrode disconnect method and arrangement for practicing the method 1990-09-04
4740731 Two capacitor apparatus for sequential starting and operation of multiple series connected discharge lamps 1988-04-26
4517498 Sequence start lamp ballast with current spike suppression means 1985-05-14