Granted Patent
Utility
US 4,214,136 · App. 06/013,194
Electrical switches for control devices such as temperature regulators
Inventors:
Guglielmo Rossi, Hans Bosing
Patented Case
View Patent ↗
Granted: Jul 22, 1980
Filed: Feb 16, 1979
Inventors
Guglielmo Rossi
Hans Bosing
Assignee (at issue)
RANCO CO., Ltd.
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.