Granted Patent
Utility
US 5,671,649 · App. 08/623,932
Method of making protective sleeve with warp spacers
Inventors:
Michael Piotrowski, Robert J. Brushafer, Janice R. Maiden, Joan Bitwinski
Patented Case
View Patent ↗
Granted: Sep 30, 1997
Filed: Mar 28, 1996
Inventors
Michael Piotrowski
Robert J. Brushafer
Janice R. Maiden
Joan Bitwinski
Assignee (at issue)
Bentley-Harris 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.