I am new to this Forum, but have been an enthusiastic collector of pressure lamps since the nineties. Most of my lamps have been Tilley's, but this Radius I have had for approx. 15 years and there seems to be little info on this stove lamp. There are a couple on the internet with chromed finish from the 1930's. Mine is not chromed, but has a profusion of patent marks, does it date from the 1930's too; was this lamp manufactured and distributed widely? Many thanks for any info.