Granted Patent
Utility
US 4,829,176 · App. 06/872,949
Logging apparatus and method
Inventors:
William C. Paske, Richard F. Roesler
Patented Case
View Patent ↗
Granted: May 9, 1989
Filed: Jun 11, 1986
Inventors
William C. Paske
Richard F. Roesler
Assignee (at issue)
NL Industries, Inc.
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.