An US patent number is D0365123, Which type of US patent is it?
A. Design patent
B. Plant patent
C. Utility patent
D. software patent
查看答案
An US patent number is PP012835, Which type of US patent is it?
A. Design patent
B. Plant patent
C. Utility patent
D. software patent
What kinds of invent can be issued as patent?
A. New
B. Useful
C. Non-obvious
D. beautiful
Structure of patent documents include
A. front page
B. drawings
C. specifications
D. claims
Which tools can be used to search patent?
A. Espacenet patent search
B. WIPO Patentscope
CNIPA patent search and analysis
D. USPTO patent search
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