Granted Patent
Utility
US 4,646,926 · App. 06/887,552
Tamper resistant & tamper evident closures
Inventors:
Albert J. Agbay, Ralph H. Thomas, Sr.
Patented Case
View Patent ↗
Granted: Mar 3, 1987
Filed: Jul 17, 1986
Inventors
Albert J. Agbay
Ralph H. Thomas, Sr.
Assignee (at issue)
Robert Linkletter Associates, 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.