Granted Patent
Utility
US 4,612,031 · App. 06/748,067
Method and apparatus for shaping glass sheets on shaping molds with flotation blocks
Inventors:
Terry A. Bennett, William B. Zimmerman, Michael B. Maslanka
Patented Case
View Patent ↗
Granted: Sep 16, 1986
Filed: Jun 24, 1985
Inventors
Terry A. Bennett
William B. Zimmerman
Michael B. Maslanka
Assignee (at issue)
PPG Industries, 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.