Screening or protective devices for wall or similar openings, with or without

Official title: Screening or protective devices for {wall or similar} openings, with or without operating or securing mechanisms; Closures of similar construction (E06B5/10 takes precedence; wings for doors or windows, connected at their edges, E06B3/48; additional indoor equipment of doors or windows, not forming part of the proper finishing work of a building, e.g. curtains, A47H; gratings as building elements E04C2/24; fastening means E05; operating-mechanisms for wings in general E05F)

E06B9/00 (Screening or protective devices for wall or similar openings, with or without) appears on 10,021 US grants and 10,213 published applications in this corpus.