Closure Related (e.g., Stile, Sash Bar, Mullion, Etc.) (52/730.3) Patents (Class 52/FOR128)

Foreign Patent Art Collections

Forms hollow enclosure (e.g., tubular, etc.) (52/730.4) (Class 52/FOR129)
Having angular component (e.g., having l, t, z cross section, etc.) (52/730.6) (Class 52/FOR131)

There are no patents to show for this class.