90-5052 DOOR ANSWERING SYSTEM A door answering system is described for enabling the occupant of a structure (e.g., house, apartment, etc.) to provide a pre-recorded message to a visitor who has approached the entrance of the structure. The system includes a speaker/ microphone and a call switch at the entrance for the visitor. Inside the structure there is a recorder/player for playing a pre-recorded message and recording a message left by the visitor.
申请公布号
CA2073571(A1)
申请公布日期
1994.01.11
申请号
CA19922073571
申请日期
1992.07.10
申请人
MARRICK, PAUL J. T.;ARNOLD, GREGORY J.;SAUTER, RUDOLPH A.
发明人
MARRICK, PAUL J. T.;ARNOLD, GREGORY J.;SAUTER, RUDOLPH A.