I've noticed that both wands on older Filter Queens are curved as are the wands on the tank style Royals. Also they both have the rubber fitting on the end that fits over the tools rather than sliding into them like on a Eureka or Electrolux. The rug nozzle is also similiar on both...so what I am wondering is, were Filter Queen and Royal manufactured by the same company at some point in time thereby having these similiarities?
Gary
Gary