Granted Patent
Utility
US 4,284,589 · App. 06/090,733
Tamper resistant choke pull-off
Inventor:
Jerry H. Winkley
Patented Case
View Patent ↗
Granted: Aug 18, 1981
Filed: Nov 2, 1979
Inventor
Jerry H. Winkley
Assignee (at issue)
ACF Industries Incorporated
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.