Granted Patent
Utility
US 5,148,549 · App. 07/689,980
Back support with side openings and attached apron
Inventor:
Robin Sydor
Patented Case
View Patent ↗
Granted: Sep 22, 1992
Filed: Apr 23, 1991
Inventor
Robin Sydor
Assignee (at issue)
Ergodyne 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.