Finnish Patent and Registration Office

Peter to add notes from WEHC here.

• "Swedish patent agents were responsible for between 30-40% of foreign patents in Finland."
• Starting in 1856 in Sweden and in 1876 in Finland it was required that for a foreigner to get a patent, a local patent agent must be identified. Andersson indicates that the requirement was intended to serve judicial processes.
• The technology classification system for patents was basically the German one, with some modifications. Jari Eloranta confirms this. We haven't documented the differences, but 77 is the main number/category for aeronautics and aviation.

References

For more see:

• https://fi.wikipedia.org/wiki/Patentti-_ja_rekisterihallitus
• https://www.wikidata.org/wiki/Q11886867