Granted Patent
Utility
US 6,115,861 · App. 09/064,297
Mattress structure
Inventors:
Ryan A. Reeder, James R. Stolpmann, Roger D. Dalton, Steven R. Westerfeld
Patented Case
View Patent ↗
Granted: Sep 12, 2000
Filed: Apr 22, 1998
Inventors
Ryan A. Reeder
James R. Stolpmann
Roger D. Dalton
Steven R. Westerfeld
Assignee (at issue)
PaTMark Company, 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.