Granted Patent
Utility
US 4,441,207 · App. 06/340,609
Design rule checking using serial neighborhood processors
Inventors:
Robert M. Lougheed, Trevor Nigel Mudge
Patented Case
View Patent ↗
Granted: Apr 3, 1984
Filed: Jan 19, 1982
Inventors
Robert M. Lougheed
Trevor Nigel Mudge
Assignees (at issue)
Environmental Research Institute
THE REGENTS OF THE UNIVERSITY OF MICHIGAN
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.