Granted Patent
Utility
US 5,123,435 · App. 07/675,879
Laminar damper and method of airflow control
Inventors:
Peter Alfred Blacklin, David A. Racine
Patented Case
View Patent ↗
Granted: Jun 23, 1992
Filed: Mar 27, 1991
Inventors
Peter Alfred Blacklin
David A. Racine
Assignee (at issue)
TATE ACCESS FLOORS, INC.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.