Granted Patent
Utility
US 4,498,042 · App. 06/441,146
Mat testing apparatus
Inventors:
Clifford A. Landsness, Thomas M. Buehrle
Patented Case
View Patent ↗
Granted: Feb 5, 1985
Filed: Nov 15, 1982
Inventors
Clifford A. Landsness
Thomas M. Buehrle
Assignee (at issue)
B. F. Goodrich 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.