Granted Patent
Utility
US 4,512,505 · App. 06/631,289
Convertible platen for graphics plotter
Inventors:
Pernie E. Westly, Uri Leder
Patented Case
View Patent ↗
Granted: Apr 23, 1985
Filed: Jul 16, 1984
Inventors
Pernie E. Westly
Uri Leder
Assignee (at issue)
Sanders GmbH
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.