Granted Patent
Utility
US 4,337,269 · App. 06/059,969
Preservative compositions
Inventors:
Philip A. Berke, William E. Rosen
Patented Case
View Patent ↗
Granted: Jun 29, 1982
Filed: Jul 23, 1979
Inventors
Philip A. Berke
William E. Rosen
Assignee (at issue)
Sutton Laboratories, 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.