Granted Patent
Utility
US 4,341,862 · App. 06/226,022
Vesicular recording materials
Inventors:
Stuart CLARKE, William A. Craig
Patented Case
View Patent ↗
Granted: Jul 27, 1982
Filed: Jan 19, 1981
Inventors
Stuart CLARKE
William A. Craig
Assignee (at issue)
Bexford Limited
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.