| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| GB/T 4837-1984 | English | 159 |
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Days<=3
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Typewriters. Layout of printing and function keys
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GB/T 4837-1984
| Obsolete |
GB/T 4837-1984
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