Granted Patent
Utility
US 5,095,573 · App. 07/590,502
Scraper tool
Inventors:
David R. Henke, Douglas B. Malchow
Patented Case
View Patent ↗
Granted: Mar 17, 1992
Filed: Sep 26, 1990
Inventors
David R. Henke
Douglas B. Malchow
Assignee (at issue)
Warner Manufacturing Company
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.