Inventor

ANDRUSKA DONALD L

US4 patents

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

LUCENT TECHNOLOGIES INC

3 patents

US5574780ANov 12, 1996

Controll of call features provided to a subscriber by a hierarchical telecommunication switch

LUCENT TECHNOLOGIES INC124 citations93

US5550904AAug 27, 1996

Method for identifying the originating network at the terminating network for transnetwork calls

LUCENT TECHNOLOGIES INC70 citations91

US6912274B2Jun 28, 2005

System allowing telephone customers to send and retrieve electronic mail messages using only conventional telephonic devices

LUCENT TECHNOLOGIES INC8 citations70

AT & T CORP

1 patent

US5544236AAug 6, 1996

Access to unsubscribed features

AT & T CORP134 citations96