Granted Patent
Utility
US 4,518,557 · App. 06/264,574
Process for skin foam
Inventor:
Sheldon M. Wecker
Patented Case
View Patent ↗
Granted: May 21, 1985
Filed: May 18, 1981
Inventor
Sheldon M. Wecker
Assignee (at issue)
James River-Norwalk
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.