Inventor

YEWELL DAVID

US2 patents

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

(unassigned)

1 patent

US6208731B1Mar 27, 2001

Multisensing circuitry for class signals and stutter dial tone in visual message waiting indicator

14 citations68

NOTIFY CORP

1 patent

US5825852AOct 20, 1998

Multisensing circuitry for class signals and stutter dial tone in visual message waiting indicator

NOTIFY CORP15 citations68