Granted Patent
Utility
US 5,437,297 · App. 07/969,641
Crank handle assembly for use in an umbrella
Inventors:
David Crisman, Glen D. Kemnitz
Patented Case
View Patent ↗
Granted: Aug 1, 1995
Filed: Oct 30, 1992
Inventors
David Crisman
Glen D. Kemnitz
Assignee (at issue)
Sunbeam Corporation Limited
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.