Granted Patent
Utility
US 4,186,786 · App. 05/947,040
Colored interlocking closure strips for a container
Inventor:
George F. Kirkpatrick
Patented Case
View Patent ↗
Granted: Feb 5, 1980
Filed: Sep 29, 1978
Inventor
George F. Kirkpatrick
Assignee (at issue)
Union Carbide 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.