Granted Patent
Utility
US 4,678,528 · App. 06/708,306
Method and apparatus for making a printed and embossed floor covering using a cast wear layer
Inventors:
Merrill M. Smith, Donald C. Ferguson
Patented Case
View Patent ↗
Granted: Jul 7, 1987
Filed: Mar 5, 1985
Inventors
Merrill M. Smith
Donald C. Ferguson
Assignee (at issue)
AMERICAN BILTRITE LTD.
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.