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
G03B21/32—Details specially adapted for motion-picture projection
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
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Storage Of Web-Like Or Filamentary Materials
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Vorrichtung zur Abschaetzung der Geschwindigkeit einesdrehbaren Organs zur Ableitungder Geschwindigkeit insbesondere eines Fahrzeuges, z.B. eines Fahrrades mit Hilfsmotor, aus derselben