We need information! Lundholm Minipiano Stockholm, Sweden

[Sandy Maynard]

We have a Lundholm Minipiano made in Stockholm, Sweden. It's a black small upright. We have a Patent number, can this help us to find information about it's age or where it came from? If not, how do we do this?

[Bill Kibby]

I don't know if it can be done, my active research is aimed at antique British pianos, and I have no information that would help with this maker. You could try espacenet.com for patents.