EC

Edward Chalfin

SE Sprague Electric: 4 patents #18 of 148Top 15%
📍 Shrewsbury, MA: #296 of 938 inventorsTop 35%
🗺 Massachusetts: #27,608 of 88,656 inventorsTop 35%
Overall (All Time): #1,306,056 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
4691262 Circuit for protecting a power transistor against a short-circuited load 1987-09-01
4485301 Linear two-terminal integrated circuit photo sensor Walter S. Gontowski, Jr. 1984-11-27
4467191 Photo diode with auxiliary photo diode regulator Walter S. Gontowski, Jr. 1984-08-21
4454416 Photo-electric circuit employing current mirrors Walter S. Gontowski, Jr. 1984-06-12