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- Tue Dec 01, 2020 7:19 pm
- Forum: PATSTAT Product Line
- Topic: PATSTAT: Aren't all application in tls201 included in tls209?
- Replies: 1
- Views: 1166
PATSTAT: Aren't all application in tls201 included in tls209?
Using PATSTAT Spring 2018; MySQL. Looking for IPC classification of patents of invention of US for certain periods. It appears that a very large number of applications in the table tls201 do not have corresponding entries in the tls209 table. Is this really so or I'm not getting it right? Sample que...