Granted Patent
Utility
US 5,990,797 · App. 08/808,041
Ultraloud smoke detector
Inventors:
Eugene Zlotchenko, Michael A. Swieboda
Patented Case
View Patent ↗
Granted: Nov 23, 1999
Filed: Mar 4, 1997
Inventors
Eugene Zlotchenko
Michael A. Swieboda
Assignee (at issue)
BKK Brands, 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.