Granted Patent
Utility
US 5,160,464 · App. 07/180,707
Polymer irradiation
Inventors:
Ian MacMillan Ward, Denis W. Woods, Walter K. Busfield
Patented Case
View Patent ↗
Granted: Nov 3, 1992
Filed: Mar 8, 1988
Inventors
Ian MacMillan Ward
Denis W. Woods
Walter K. Busfield
Assignee (at issue)
NATIONAL RESEARCH DEVELOPMENT 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.