หลอดไฟฟ้า, มยูข, ความคิด, คิดว่า, การประดิษฐ์, ลูกแพร์, โคมไฟ, เบา, นวัตกรรม, หลอดไฟ
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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