Patents/Inventors

John Allen Armstrong

Fairview, KSUS3 patents

4 Patents

US122412102025
Cordless Electrically-powered Concrete Screed
Curb Roller LLC
0 cites
US121959322025
Modular Concrete Screed System
Curb Roller LLC
0 cites
US117537792023
Modular Concrete Screed System
Curb Roller LLC
0 cites
US117253492023
Cordless Electrically-powered Concrete Screed
Curb Roller LLC
0 cites