Membership
Tour
Register
Log in
Virgil A. Smith
Follow
Person
Stony Mountain, CA
People
Overview
Industries
Organizations
People
Information
Impact
Patents Grants
last 30 patents
Information
Patent Grant
Collapsing stair lift
Patent number
5,234,078
Issue date
Aug 10, 1993
Roth; Daniel K.
Virgil A. Smith
B66 - HOISTING LIFTING HAULING