Granted Patent
Utility
US 5,160,563 · App. 07/502,575
Method and apparatus for making an expandable cellular shade
Inventors:
Darrell J. Kutchmarek, James H. Stauffacher
Patented Case
View Patent ↗
Granted: Nov 3, 1992
Filed: Mar 30, 1990
Inventors
Darrell J. Kutchmarek
James H. Stauffacher
Assignee (at issue)
Graber Industries, 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.