Membership
Tour
Register
Log in
Ralph I. Nagata
Follow
Person
Berlin, NJ, US
People
Overview
Industries
Organizations
People
Information
Impact
Patents Grants
last 30 patents
Information
Patent Grant
Dial tone speed monitor
Patent number
3,968,335
Issue date
Jul 6, 1976
Telesciences, Inc.
Leroy H. Werner
H04 - ELECTRIC COMMUNICATION TECHNIQUE