Granted Patent
Utility
US 4,576,307 · App. 06/568,387
Separable elements held together by a sliding latch
Inventor:
Donald V. Frydenberg
Patented Case
View Patent ↗
Granted: Mar 18, 1986
Filed: Jan 5, 1984
Inventor
Donald V. Frydenberg
Assignee (at issue)
Doskocil Manufacturing Company, 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.