I just meant the Australians copied this type of remote starter idea connected to the the low energy trip-release impulse starter. As far as I know this low energy trip-release impulse starter was first used here in 1963.
I'm not sure also who else used a remote (handle) start on their impulse starters ,I will have a look at a few more mowers.
One different type of starter I've seen was a kick starter connected to a recoil starter.