Analysis: How common was tech category FR 6.4
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To make plain: When did this category start? How common was 6.3, before this point? How much does 6.4 grow?
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Techtype count sentences
This wiki has 2,639 patents in category "FR 6.4". This wiki has 535 patents in category "FR 6.3".
- Break those out by year in bar charts
Counts of FR 6.4 by year:
Counts of FR 6.3 by year:
