Questions tagged [espacenet]
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3 questions with no upvoted or accepted answers
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ESPACENET/OPS patent families
In EPO web site there's a definition of patent families page and, relating to this definitions, in other pages of the site it's stated about ESPACENET equivalents that:
Definition of the Espacenet ...
user8305
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Espacenet - date when online records begin
What date does Espacenet hold patent data from? Is it still 1890?
Thanks in advance!
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What is the first filed country of patent CN 101361713 B?
Curcumin nano crystallization preparation and preparation method thereof
CN 101361713 B
Which is the first filing country with state?
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