Granted Patent
Utility
US 4,725,970 · App. 06/698,474
Simulation device
Inventors:
James L. Burrows, Paul D. Zemany
Patented Case
View Patent ↗
Granted: Feb 16, 1988
Filed: Feb 5, 1985
Inventors
James L. Burrows
Paul D. Zemany
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.