Granted Patent
Utility
US 4,598,843 · App. 06/659,677
Take-up piston shipping lock for viscous product dispensers
Inventors:
Donald D. Foster, Robert N. Hills, David Moore, Phil Nelson
Patented Case
View Patent ↗
Granted: Jul 8, 1986
Filed: Oct 11, 1984
Inventors
Donald D. Foster
Robert N. Hills
David Moore
Phil Nelson
Assignee (at issue)
Realex 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.