Granted Patent
Utility
US 4,244,492 · App. 05/884,750
Packaging for reclaiming scrap metal
Inventors:
Ronald Jay Beyerstedt, Ludwig Gutnajer, Michael W. Laszewski
Patented Case
View Patent ↗
Granted: Jan 13, 1981
Filed: Mar 9, 1978
Inventors
Ronald Jay Beyerstedt
Ludwig Gutnajer
Michael W. Laszewski
Assignee (at issue)
Champion International Corporation Limited
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.