Granted Patent
Utility
US 5,044,021 · App. 07/395,733
Continuous swimming apparatus
Inventor:
James Murdock
Patented Case
View Patent ↗
Granted: Sep 3, 1991
Filed: Aug 18, 1989
Inventor
James Murdock
Assignee (at issue)
Endless Pools, 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.