Appeal No. 2002-1236 Application No. 08/359,743 BACKGROUND Appellants’ invention relates to a radio telephone system. An understanding of the invention can be derived from a reading of exemplary claim 1, which is reproduced below. 1. A radio telephone system including a base station connected to a wire circuit and a plurality of mobile stations which perform radio communications with the base station, respectively, said radio telephone system comprising: a base station echo-back transmit-receive section provided in said base station for transmitting echo-back request signals to said mobile stations, respectively, located in a radio zone of said base station and for receiving echo-back response signals transmitted from said mobile stations; and a mobile station echo-back transmit-receive section provided in each of said mobile stations for transmitting one of the echo-back response signals in response to a corresponding one of the echo-back request signals transmitted from said base station, so that all the mobile station echo-back transmit-receive sections of said mobile stations which received one of the echo-back request signals from said base station transmit the echo-back response signals to notify said base station of their presence in said radio zone. The prior art references of record relied upon by the examiner in rejecting the appealed claims are: Boudreau et al. (Boudreau) 5,369,681 Nov. 29, 1994 Simpson et al. (Simpson) 5,475,863 Dec. 12, 1995 (filed Oct. 4, 1993) Claims 1 and 3 stand rejected under 35 U.S.C. § 102 as being anticipated by Boudreau. Claims 4-6, 8, and 9 stand rejected under 35 U.S.C. § 103 as being 2Page: Previous 1 2 3 4 5 6 7 8 9 10 NextLast modified: November 3, 2007