Granted Patent
Utility
US 5,897,580 · App. 08/749,063
Heated breast pump shield
Inventor:
Brian H. Silver
Patented Case
View Patent ↗
Granted: Apr 27, 1999
Filed: Nov 14, 1996
Inventor
Brian H. Silver
Assignee (at issue)
Prism Enterprises LP
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.