Granted Patent
Utility
US 4,917,416 · App. 07/247,157
Window latching device
Inventors:
Dennis Westphal, Jonathan Piles
Patented Case
View Patent ↗
Granted: Apr 17, 1990
Filed: Sep 21, 1988
Inventors
Dennis Westphal
Jonathan Piles
Assignee (at issue)
CERTAINTEED LLC
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.