Granted Patent
Utility
US 4,255,902 · App. 06/002,649
Weather sealing assembly for doors
Inventor:
Robert O. Ruff
Patented Case
View Patent ↗
Granted: Mar 17, 1981
Filed: Jan 11, 1979
Inventor
Robert O. Ruff
Assignee (at issue)
American Standard 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.