Robert R. Keller

City:

Chicago, Illinois

Country:

United States

Published Applications:

Last publication date:

2008-07-31

Top Assignees for applications by Robert R. Keller

The entities that hold a legal rights for patent applications filed by inventor Keller Robert R.:

Robert R. Keller from Chicago, US has applied for patents for these inventions. The list has both pending applications and granted patents:

Movable barrier operator auto-force setting method and apparatus

Multi-frequency security code transmission and reception

System and method for adapting to barrier nuisances and obstructions

InventorID:

4222679 ⎘