Granted Patent
Utility
US 4,005,249 · App. 05/226,417
Polymerization of vinyl chloride
Inventors:
Harold E. Peterson, Philip P. Rathke
Patented Case
View Patent ↗
Granted: Jan 25, 1977
Filed: Feb 15, 1972
Inventors
Harold E. Peterson
Philip P. Rathke
Assignee (at issue)
Owens-Illinois 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.