Granted Patent
Utility
US 4,514,048 · App. 06/293,230
Variable focus elastomeric lens system
Inventor:
Howard G. Rogers
Patented Case
View Patent ↗
Granted: Apr 30, 1985
Filed: Aug 17, 1981
Inventor
Howard G. Rogers
Assignee (at issue)
Polaroid 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.