Granted Patent
Utility
US 4,589,161 · App. 06/763,813
Vacuum driven tool
Inventors:
Werner W. Kochte, Susan K. Nimon
Patented Case
View Patent ↗
Granted: May 20, 1986
Filed: Aug 8, 1985
Inventors
Werner W. Kochte
Susan K. Nimon
Assignee (at issue)
The Scott Fetzer 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.