Greetings all,  In response to Gerhard Dangle-Reese's inquiry about
Otto Kremp.  He worked for Richard Cardwell's father's electronics
firm after he left the presidency of the Welte firm in the 1930's.
I believe he was involved in designing radar or radio calibrating sets
for the US Army Air Force during WW2.

 [ Was the firm Cardwell Electronics?  -- Robbie

After the war, he also helped design some physical therapy devices,
to be used on wounded soldiers who needed physical therapy and
rehabilitation in order to return their injured limbs to optimum
functioning.  Of course, the devices involved pneumatics to exercise
the injured part; probably also some type of paper roll to control the
repetition, strength and duration of the particular therapeutic
movement.

I'm dashing this response off, based on what I recall of a conversation
I had with Richard Cardwell and his brother.  I may not have all the
facts exactly right, but the interesting thing about this all is the
concept of using pneumatics to enhance physical therapy.

Richard, please correct any mistakes I have made in my recollections
of our conversations.

Best regards,

John McClelland.
(it's still raining in Central Texas!)