Granted Patent
Utility
US 4,622,778 · App. 06/759,901
Latch and corner support for pivotal window sash
Inventor:
Harold Simpson
Patented Case
View Patent ↗
Granted: Nov 18, 1986
Filed: Jul 29, 1985
Inventor
Harold Simpson
Assignee (at issue)
Ashland Products, Inc.
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.