Granted Patent
Utility
US 5,556,142 · App. 08/421,749
Rotary hook tension-shear latch
Inventor:
Frank A. Zankich
Patented Case
View Patent ↗
Granted: Sep 17, 1996
Filed: Apr 13, 1995
Inventor
Frank A. Zankich
Assignee (at issue)
Hartwell 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.