The bikes in posts #6 and #9 have a sprocket on the front wheel. Is this a mechanism for 2 x 2 drive a la the Rokon? The Cub shares the same DNA as the OP's bike.
The Nethercutt Trail-Breaker (the original name of the Rokon) debuted in 1958 so Arctic wasn't 'trailblazing' the technology.