P

Inventor

ANDRIETSCH MARGARET JEAN

US4 patents
⚠️ This page may combine multiple inventors who share the name “ANDRIETSCH MARGARET JEAN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SBC PROPERTIES LP

1 patent

AMERITECH CORP

1 patent

AT & T INTELLECTUAL PROPERTY 1

1 patent

HENRY TRICIA EHLERS

1 patent