Granted Patent
Utility
US 4,476,924 · App. 06/472,827
Grease injection control head having a specific gas trap
Inventors:
Carl E. Winders, Fred E. Watkins
Patented Case
View Patent ↗
Granted: Oct 16, 1984
Filed: Mar 7, 1983
Inventors
Carl E. Winders
Fred E. Watkins
Assignee (at issue)
Camco 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.