Granted Patent
Utility
US 4,887,196 · App. 07/257,761
Recessed track lighting system
Inventors:
Tobias Brown, Scott L. Roos, Donald D. Biancalana, Donald J. Westgaard
Patented Case
View Patent ↗
Granted: Dec 12, 1989
Filed: Oct 14, 1988
Inventors
Tobias Brown
Scott L. Roos
Donald D. Biancalana
Donald J. Westgaard
Assignee (at issue)
Alkco Manufacturing Company
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.