ผลต่างระหว่างรุ่นของ "ฉนวนไฟฟ้า"
เนื้อหาที่ลบ เนื้อหาที่เพิ่ม
Rescuing 1 sources and tagging 0 as dead.) #IABot (v2.0.8 |
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บรรทัด 9:
*[http://teleramics.com/ Teleramics - specialises in UK telegraph insulators with a railway bias]
*[http://www.myinsulators.com/downtownseattle/ One person's obsession with US telephone pole insulators]
*[http://www.insulatorscanada.com/ Insulatorscanada] {{Webarchive|url=https://web.archive.org/web/20091022174600/http://www.insulatorscanada.com/ |date=2009-10-22 }}
*[http://reference.insulators.info/patents/ Insulator Patent Reference Library] - Contains over 2,800 US patents relating to electric
*al insulators and related items
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