Granted Patent
Utility
US 4,532,386 · App. 06/539,204
Dual voltage switch
Inventors:
Frank John Muench, John Mitchell Makal
Patented Case
View Patent ↗
Granted: Jul 30, 1985
Filed: Oct 5, 1983
Inventors
Frank John Muench
John Mitchell Makal
Assignee (at issue)
RTE Corporation
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.