Granted Patent
Utility
US 5,083,553 · App. 07/508,787
Cervical collar
Inventors:
Vernon L. Stevenson, Paul N. Brost
Patented Case
View Patent ↗
Granted: Jan 28, 1992
Filed: Apr 12, 1990
Inventors
Vernon L. Stevenson
Paul N. Brost
Assignee (at issue)
Tecnol, 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.