Granted Patent
Utility
US 5,850,535 · App. 08/542,453
Roll-back during regeneration on a computer-aided design system
Inventors:
Gennady Maystrovsky, Timothy Friedman
Patented Case
View Patent ↗
Granted: Dec 15, 1998
Filed: Oct 12, 1995
Inventors
Gennady Maystrovsky
Timothy Friedman
Assignee (at issue)
Computervision 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.