Stanley ejection seats

Am trying to read James R. Hansen’s biography of Neil Armstrong “First Man” – I’m finding it heavy going.

Am at the part of Armstrong’s career whilst flying with VF-51 over Korea from the USS Essex.

On 3rd September, 1951 a six foot section of his F9F-2 Panther starboard wing was sheared off by a cable trap set up by the North Koreans and, unable to land he safely ejected.

The narrative says (page 95) “….the Panther’s British-made Stanley model 22G ejection seat….”

I’ve never heard of this type before – Martin Baker are, deservedly very well known and I know that Folland designed their own seat for the Gnat.

Anyone else know of Stanley, what the company’s origins were and what happened to it?

Roger Smith.