Granted Patent
Utility
US 4,332,552 · App. 06/193,609
Moldatherm insulated pacemaker furnace and method of manufacture
Inventor:
Karl H. Seelandt
Patented Case
View Patent ↗
Granted: Jun 1, 1982
Filed: Oct 3, 1980
Inventor
Karl H. Seelandt
Assignee (at issue)
Federal Signal 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.