Granted Patent
Utility
US 4,350,722 · App. 06/241,646
Hollow glass article with improved optical finish
Inventors:
Donald G. Trutner, Luke Thorington
Patented Case
View Patent ↗
Granted: Sep 21, 1982
Filed: Mar 9, 1981
Inventors
Donald G. Trutner
Luke Thorington
Assignee (at issue)
Duro-Test 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.