Unitron's research and development activities have resulted in high-tech hearing aids that can be used with Bluetooth devices and mp3 players. It was sold to Swiss-based Phonak Group in 2001.
Marvel Grain Thower
The Ferguson “The Marvel Grain Thrower” represents the shift in the early twentieth century to all-metal construction
The McKee One Man Harvester allowed a farmer to harvest and store his crop of hay single-handedly using only one tractor rather than more labour-intensive baling equipment.