Granted Patent
Utility
US 5,333,834 · App. 08/038,535
Valve driver
Inventor:
Paul B. Soderberg
Patented Case
View Patent ↗
Granted: Aug 2, 1994
Filed: Mar 29, 1993
Inventor
Paul B. Soderberg
Assignee (at issue)
Soderberg Research & Development, Inc.
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.