Granted Patent
Utility
US 5,758,874 · App. 08/622,942
Universal vacuum drum and mask
Inventor:
Roger J. Morrissette
Patented Case
View Patent ↗
Granted: Jun 2, 1998
Filed: Mar 27, 1996
Inventor
Roger J. Morrissette
Assignee (at issue)
Optronics International, LLC
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.