With permission I'm posting pictures to see if anyone can shed any light on this stove. So far I can find nothing so I said I'd put it to the collective wisdom of CCS.
I'm familiar with the alcohol burners but this appears to be Primus collaboration with kerosene burners.
A different USA stove manufacturer but again using Swedish burners: OMC said: “Re the Shipmate and burners: Iani provided an image of one of his burners, not sure what we might yet determine from that? I've seen Shipmate stoves with Primus, Optimus & Radius burners. What burners were original to the stove above? ....I don't know for sure. Credit BernieDawg I get the impression from his example that his Primus tank asm. and Primus burner asms. were original to his Shipmate stove. So there's that. Swedish burners were used by many manufacturers globally for "other" stove/applications. I've also seen Shipmate examples that it appears Optimus burners were original.” Shipmate - Primus - 1939 Best Regards, Kerophile.
Yes that would appear to be the case here with a Perko. Thanks for the links @kerophile @Spiritburner