Granted Patent
Utility
US 4,644,328 · App. 06/437,846
Buoyant alarm device
Inventors:
Edward Szymansky, Richard J. Wegrzyn, Richard I. Baker
Patented Case
View Patent ↗
Granted: Feb 17, 1987
Filed: Oct 29, 1982
Inventors
Edward Szymansky
Richard J. Wegrzyn
Richard I. Baker
Assignee (at issue)
Remington Products 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.