Granted Patent
Utility
US 4,243,632 · App. 06/051,121
Contact lens disinfector with temperature indicator
Inventor:
Francis E. Ryder
Patented Case
View Patent ↗
Granted: Jan 6, 1981
Filed: Jun 22, 1979
Inventor
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.