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Premium Photo | The signal lamp is designed to provide morse code light signals and lighting. visual communication with ships and coastal posts.
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Signal lamp - Signal lamps - Traditional lamps and signalling products - Lyvia - Arteleta International S.p.A. - Components, materials and electrical items
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File:Germany blinker signal lamp - National World War I Museum - Kansas City, MO - DSC07704.JPG - Wikipedia
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Office of Naval Research Set to Upgrade the 200-Year-Old Signal Lamp for Modern Stealth Communication
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