US 5482100 A - Cordless, balanced venetian blind or shade with consistent variable force spring motor - The Lens - 免费开放专利和学术搜索
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US 5482100 A - Cordless, balanced venetian blind or shade with consistent variable force spring motor - The Lens - 免费开放专利和学术搜索
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US 5482100 A - Cordless, balanced venetian blind or shade with consistent variable force spring motor - The Lens - 免费开放专利和学术搜索
X Large Spring Loaded Motor for 2" Wood Blind. Cordless Literise. 73001
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FAQs | Frequently Asked Questions and Guide - SpringBlinds
