Granted Patent
Utility
US 5,090,975 · App. 07/586,615
High efficiency vacuum cleaner bags
Inventors:
Luz P. Requejo, John P. Chua
Patented Case
View Patent ↗
Granted: Feb 25, 1992
Filed: Sep 21, 1990
Inventors
Luz P. Requejo
John P. Chua
Assignee (at issue)
The Drackett Company
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.