Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
G03B21/00—Projectors or projection-type viewers; Accessories therefor
G03B21/14—Details
G03B21/18—Fire preventing or extinguishing
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like
(AREA)
Selbsttaetige Einrichtung zum Wiedereinschalten eines infolge einer Stoerung geoeffneten Schalters mittels eines in der Offenstellung des Schalters erregten Zeitrelais
Anordnung zur elektrischen Fernsteuerung mehrerer getrennter elektrischer Schaltvorgaenge einer Betriebsanlage in bestimmter, stets gleichbleibender Reihenfolge