Granted Patent
Utility
US 5,268,622 · App. 08/034,277
DC powered surgical handpiece having a motor control circuit
Inventor:
Christopher Philipp
Patented Case
View Patent ↗
Granted: Dec 7, 1993
Filed: Mar 22, 1993
Inventor
Christopher Philipp
Assignee (at issue)
STRYKER 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.