Granted Patent
Utility
US 4,680,133 · App. 06/844,385
Stripping composition containing an amide and a carbonate and use thereof
Inventor:
Irl E. Ward
Patented Case
View Patent ↗
Granted: Jul 14, 1987
Filed: Mar 26, 1986
Inventor
Irl E. Ward
Assignee (at issue)
Environmental Management Corporation
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.