This company is the AEADC and in 1932 they announced the Gryphon engine. It seems that there were two models, M and N.

- the M model had eight horizontal opposed cylinders giving 150 hp at 2,000 rpm.

“Gryphon-M 150 hp”

-The N model had 12 horizontal opposed cylinders giving 225 hp at 2,200 rpm.