Granted Patent
Utility
US 4,387,357 · App. 06/252,888
Rotary activator
Inventors:
Sheldon W. Mandel, Kenneth E. Davis
Patented Case
View Patent ↗
Granted: Jun 7, 1983
Filed: Apr 10, 1981
Inventors
Sheldon W. Mandel
Kenneth E. Davis
Assignee (at issue)
Magic Chef
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.