Granted Patent
Utility
US 4,476,995 · App. 06/313,191
Breather cap
Inventors:
Ralph R. Bellino, Charles W. McVey
Patented Case
View Patent ↗
Granted: Oct 16, 1984
Filed: Oct 20, 1981
Inventors
Ralph R. Bellino
Charles W. McVey
Assignee (at issue)
American Industrials Group
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.