Portable writing board
A writing board, a convenient technology, applied in the industrial field, can solve the problems of high cost, difficulty in satisfying personalized marketing of merchants, lack of personalization, etc.
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[0017] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.
[0018] Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless expressly stated otherwise, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.
[0019] Such as Figure 1-4As shown, a convenient writing board of the device of the present invention includes a writing board case 10 and an erasing device arranged in the writing board case 10, a first rotating chamber 12 is provided in the writing board case 10, and the writing board case 10 The board box 10 is provided with a writing board chamber 20 located on the right side of the first rotating chamber 12 and communicated with the firs...
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