Granted Patent
Utility
US 6,071,213 · App. 09/055,635
Trampoline convertible for use as swimming pool
Inventors:
Jason J. Raasch, Andrey Frolov
Patented Case
View Patent ↗
Granted: Jun 6, 2000
Filed: Apr 6, 1998
Inventors
Jason J. Raasch
Andrey Frolov
Assignee (at issue)
Midwest Air Technologies, 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.