Granted Patent
Utility
US 4,921,205 · App. 07/195,027
Lens mold assembly
Inventors:
Arthur J. Drew, Jr., Donald J. Ratkowski
Patented Case
View Patent ↗
Granted: May 1, 1990
Filed: May 17, 1988
Inventors
Arthur J. Drew, Jr.
Donald J. Ratkowski
Assignee (at issue)
Sola USA, Inc.
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.