Granted Patent
Utility
US 4,501,584 · App. 06/472,402
Liquid drainage system with formed hinged support sheet
Inventors:
James P. Cianci, William J. Dunn
Patented Case
View Patent ↗
Granted: Feb 26, 1985
Filed: Mar 4, 1983
Inventors
James P. Cianci
William J. Dunn
Assignee (at issue)
The Kendall Company 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.