Granted Patent
Utility
US 4,289,921 · App. 06/107,350
Electrical activating assembly and closure member therefor
Inventors:
Rodney W. Gartner, Charles R. Gray, John O. Hazen
Patented Case
View Patent ↗
Granted: Sep 15, 1981
Filed: Dec 26, 1979
Inventors
Rodney W. Gartner
Charles R. Gray
John O. Hazen
Assignee (at issue)
H. H. Robertson 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.