Granted Patent
Utility
US 4,595,434 · App. 06/532,440
Collapsible dispensing tube with an orifice sealed with multi-layer sealant sheet material
Inventors:
John P. Eckstein, William Gillespie, Jr., Suzanne E. Schaefer
Patented Case
View Patent ↗
Granted: Jun 17, 1986
Filed: Sep 15, 1983
Inventors
John P. Eckstein
William Gillespie, Jr.
Suzanne E. Schaefer
Assignee (at issue)
American Can Company
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.