Membership
Tour
Register
Log in
Robert A. Johnson
Follow
Person
Bonita Springs, FL, US
People
Overview
Industries
Organizations
People
Information
Impact
Patents Grants
last 30 patents
Information
Patent Grant
Apparatus for manufacturing precast concrete articles
Patent number
5,143,344
Issue date
Sep 1, 1992
Johnson Brothers Precision Precast Products, Inc.
David L. Johnson
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Grant
Method of manufacturing precast concrete articles
Patent number
5,096,648
Issue date
Mar 17, 1992
Johnson Brothers Precision Precast Products, Inc.
David L. Johnson
B28 - WORKING CEMENT, CLAY, OR STONE