DL

Daniel D. Leffel

AT AT&T: 1 patents #47 of 261Top 20%
AT American Telephone And Telegraph: 1 patents #42 of 244Top 20%
📍 Pottstown, PA: #1 of 11 inventorsTop 10%
🗺 Pennsylvania: #313 of 3,759 inventorsTop 9%
Overall (1989): #29,483 of 140,708Top 25%
2
Patents 1989

Issued Patents 1989

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4870029 Method of forming complementary device structures in partially processed dielectrically isolated wafers William Easter 1989-09-26
4820653 Technique for fabricating complementary dielectrically isolated wafer William Easter 1989-04-11