Invention Grant
USB464587I5
失效
- Patent Title:
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Application No.: US46458774Application Date: 1974-04-26
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Publication No.: USB464587I5Publication Date: 1976-02-03
- Priority: US46458774 1974-04-26; US38163473 1973-07-23
- Main IPC: C10L1/30
- IPC: C10L1/30 ; C10L10/04 ; C10M171/00
Information query
