Appeal No. 2004-0891 Application No. 09/810,539 1. A vacuum cleaner installation comprising: a room and a vacuum cleaner arrangement installed in said room, said vacuum cleaner arrangement including a housing, a blower, a receptacle for larger particles of waste material, an inlet opening into the room and an air exhaust outlet venting through a rear wall of said housing, wherein said housing is mounted in a hole extending through a wall of said room, said hole opening externally of the room such that said rear wall of said housing is exposed externally and said air exhaust outlet vents directly externally of the room without any external conduit such that all air and smaller particles of waste material vent outside the room with none of the air and smaller particles of waste material returning to the room. 5. An installation according to Claim 1, wherein said vacuum cleaner arrangement has a hose, and wherein said hose is retractable into said housing. The examiner relies upon the following references as evidence of unpatentablity: Hamrick 3,568,239 Mar. 9, 1971 Tucker 3,706,184 Dec. 19, 1972 Simonelli 3,714,765 Feb. 6, 1973 Harrelson 5,740,582 Apr. 21, 1998 Uehara 6,149,698 Nov. 21, 2000 Claim 1 stands rejected under 35 U.S.C. § 103 as being unpatentable over Hamrick in view of Tucker and Uehara. 2Page: Previous 1 2 3 4 5 6 7 8 9 NextLast modified: November 3, 2007