Granted Patent
Utility
US 4,307,289 · App. 06/014,074
Contact lens disinfecting unit
Inventors:
Michael D. Thomas, Francis E. Ryder
Patented Case
View Patent ↗
Granted: Dec 22, 1981
Filed: Feb 22, 1979
Inventors
Michael D. Thomas
Francis E. Ryder
Assignee (at issue)
RYDER INTERNATIONAL CO., LTD.
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.