Granted Patent
Utility
US 4,768,050 · App. 07/039,393
Pressure development apparatus for imaging sheets employing photosensitive microcapsules
Inventor:
Jack Beery
Patented Case
View Patent ↗
Granted: Aug 30, 1988
Filed: Apr 16, 1987
Inventor
Jack Beery
Assignee (at issue)
The Mead Corporation
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.