energy efficiency light bulb icon black and white vector outline sign |
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| navigate by keyword : energy efficiency light bulb icon ecology halogen technology electronics innovation vector drawing web invention symbol lamp design concept minimal collection save creative power inspiration set lightbulb glass buttons graphic black doodle original efficient electricity shining brainstorm fluorescent low electrical modern illumination notification simple brain isolated electric logo idea outline bright |
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| energy efficiency light bulb icon vector line logo mark or symbol set collection outline style |
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