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US3930803A
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Anti-pollution apparatus
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DE2058349A1
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Woven tube air filter - designed for ease of maintenance
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ES383514A1
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Means for sealing elongated lamps
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DE2022121A1
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Two stage air filtration - with continuously renewed band and non renewed band
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GB1285666A
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Improvements relating to contactless blocking circuits for push-pull oscillators
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ES367350A1
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Connection provision for the operation of gas discharge lamps. (Machine-translation by Google Translate, not legally binding)
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ES359264A1
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Apparatus and method for producing flashing light signals with incandescent lamps
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DE1771884B1
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CLOSURE AND DEGASSING PLUG FOR ACCUMULATORS
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GB1221549A
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Method and apparatus for the removal of combustible, vapour or gas forming impurities from an air- or gas current
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DE1766160B1
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Twilight switch for indicators
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DE1284335B
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Signal light which emits light signals or continuous light in different colors in different directions
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DE1589121A1
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Process for regulating the brightness of incandescent lamps
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DE1619855B1
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Method and device for removing acidic components from gases
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DE1525580B1
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Device for sealing monitoring of the filter seat of air filter cells arranged in channels
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DE1559618B1
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Dry powder extinguisher
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DE1472490A1
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Hand lamp, in particular maneuvering lamp
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FR1400235A
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Charger for batteries, preferably multiple stations
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GB1022828A
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Lamp and oxygen deficiency indicator
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DE1190068B
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Method for firmly connecting a cover to a cell container for electrical accumulators
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DE1160042B
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Explosion-proof housing for batteries of miner's lamps
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