Membership
Tour
Register
Log in
John F. Castagna
Follow
Person
Brooklyn, NY, US
People
Overview
Industries
Organizations
People
Information
Impact
Patents Grants
last 30 patents
Information
Patent Grant
Response tracer amplifier unit having graphic amplifier response di...
Patent number
D255684
Issue date
Jul 1, 1980
Sparkomatic Corporation
John F. Castagna
D14 - Recording, communication, or information retrieval equipment