Around 1933, Milo AB patented a significant jet turbine engine, a Lysholm design.

-This was at the same time that Swedish fellow citizens at Ljungström also patented a turboprop. (see).

“Milo”

-It had a single shaft with four centrifugal compressors in cascade, an annular and inverted combustion chamber, and an exaggerated multiple turbine with at least seven stages.

-Some of these approaches have been applied in more modern engines.

From Appendix 9: We found a twin-engine airplane design using turbojet engines of an interesting invent, pioneers in that country.

"Design of a twin-engine airplane powered by Milo"