Granted Patent
Utility
US 4,634,603 · App. 06/725,848
Method of abrasive cleaning and spray coating
Inventors:
Alder R. Gruss, Theodore A. Shapiro
Patented Case
View Patent ↗
Granted: Jan 6, 1987
Filed: Apr 22, 1985
Inventors
Alder R. Gruss
Theodore A. Shapiro
Assignee (at issue)
UNITED TECHNOLOGIES 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.