I just met the daughter (Lorraine Byce Skoog) of the owner of the incubator factory that used to be in our building, and she was able to fill us in on a few more details. The factory was the "Petaluma Electric Incubator Factory" owned by Elwood Byce (not to be confused with the Petaluma Incubator Factory which was owned by Lorraine's grand father). It was here from 1938 to 1955.
I'm still hoping someone will find an old photo of the building. That would be really cool.