Membership
Tour
Register
Log in
Trieu N. Nguyen
Follow
Person
Lompoc, CA, US
People
Overview
Industries
Organizations
People
Information
Impact
Patents Grants
last 30 patents
Information
Patent Grant
Automatic engine oil change indicator system
Patent number
4,742,476
Issue date
May 3, 1988
General Motors Corporation
Ellen S. Schwartz
G07 - CHECKING-DEVICES