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
G03B21/16—Cooling; Preventing overheating
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Shaping By String And By Release Of Stress In Plastics And The Like
(AREA)
Fireman's compressed air breathing apparatus - has supplementary flexible line to victims mask off fireman's mask main feedline via multiple union tee piece
Verfahren zur Bestimmung der Bestandteile von Gasgemischen, bei welchem das Gasgemisch durch zwei hintereinanderliegende, auf verschiedene Temperaturen gebrachte Kapillaren geschickt wird