Granted Patent
Utility
US 4,894,922 · App. 07/160,843
Hand bearing compass
Inventor:
Richard Lovelock
Patented Case
View Patent ↗
Granted: Jan 23, 1990
Filed: Feb 26, 1988
Inventor
Richard Lovelock
Assignee (at issue)
Nautech Limited
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.