附屬項的問題 - 專利

By Edwina
at 2011-02-28T15:07
at 2011-02-28T15:07
Table of Contents
請問一下
在附屬項常看到
2. 如專利範圍第1項....,其中XXX溫度範圍介於20~80度之間。
3. 如專利範圍第1項....,其中XXX溫度範圍介於30~50度之間。
4. 如專利範圍第1項....,其中XXX溫度範圍介於40~45度之間。
想請問一下,寫第2項和第3項有意義嗎??
為何要這樣寫呢??
寫第2項不是就可以了嗎...
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專利
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