Granted Patent
Utility
US 4,189,876 · App. 05/931,562
Beam-mounted folding chairs
Inventors:
Philip E. Crossman, Arthur L. Van Ryn
Patented Case
View Patent ↗
Granted: Feb 26, 1980
Filed: Aug 7, 1978
Inventors
Philip E. Crossman
Arthur L. Van Ryn
Assignee (at issue)
American Seating 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.