Granted Patent
Utility
US 4,335,551 · App. 06/162,989
Skylight construction and method of making same
Inventors:
William D. Benkelman, George C. Carlyon
Patented Case
View Patent ↗
Granted: Jun 22, 1982
Filed: Jun 25, 1980
Inventors
William D. Benkelman
George C. Carlyon
Assignee (at issue)
DayCo Holdings, LP
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.