73284431
Nov 3, 1980
Nov 1, 1983
Door and Casement Hinges, Door and Casement Pivots, Casement Holders and Operators, Transom Operators, Doorchecks (Overhead and Floor), and Door Holders and Stays
Metal GoodsAnnunciator Panels, Detector Switches and Relays for Actuating an Alarm; Electro-Mechanical Door Holder Releases and/or Door Closers and Latches; and Audible and Silent Alarms and Indicators Including Bells, Buzzers, Horns, Lights and Sirens and Heat Sensing Fire Control Systems
Electrical and Scientific Apparatus