Granted Patent
Utility
US 5,215,517 · App. 07/825,545
Flat cervical collar
Inventors:
Vernon L. Stevenson, Paul N. Brost
Patented Case
View Patent ↗
Granted: Jun 1, 1993
Filed: Jan 24, 1992
Inventors
Vernon L. Stevenson
Paul N. Brost
Assignee (at issue)
Tecnol Medical Products, 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.