Granted Patent
Utility
US 6,152,134 · App. 09/051,787
Oxygen conserving device
Inventors:
Stephanie Webber, Todd A. Spiegelberg, Dave Nuttall, Anna Marsillo, Mike Dziak
Patented Case
View Patent ↗
Granted: Nov 28, 2000
Filed: Jun 22, 1998
Inventors
Stephanie Webber
Todd A. Spiegelberg
Dave Nuttall
Anna Marsillo
Mike Dziak
Assignee (at issue)
INVACARE 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.