Granted Patent
Utility
US 5,738,095 · App. 08/668,733
Tracheostoma device
Inventor:
Jan-Ove Persson
Patented Case
View Patent ↗
Granted: Apr 14, 1998
Filed: Jun 24, 1996
Inventor
Jan-Ove Persson
Assignee (at issue)
Atos Medical AB
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.