Granted Patent
Utility
US 4,177,908 · App. 05/890,031
Locking parallel bar hanger
Inventors:
John H. Batts, Judd F. Garrison
Patented Case
View Patent ↗
Granted: Dec 11, 1979
Filed: Mar 27, 1978
Inventors
John H. Batts
Judd F. Garrison
Assignee (at issue)
John Thomas Batts, 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.