LARGE-SIZED SCREEN WASHING DEVICE
To provide a large-sized screen washing device capable of safely and efficiently washing an existing large-sized screen.SOLUTION: A large-sized screen washing device 100 comprises: a pair of rails 2 that are arranged respectively above and below a large-sized screen 1 including an image plane 1a, an...
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Format: | Patent |
Sprache: | eng ; jpn |
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