a little history..
2013 marks the 50th anniversary of the compact cassette, known as "cassette" by most folks. few consumer products have a 50 year run. in it's 50 year lifespan, the cassette dethroned the reel to reel as a portable consumer audio recording media, made taking your music with you a convenient reality, spawned the birth of the walkman, and thus the creation of the portable entertainment industry as we know it. all this caused by a lowly cassette recorder brought to market in 1963 by the philips company.
in europe, these early cassette recorders were sold under the philips name. in the USA they were sold under the norelco name. philips was sued by philco and couldn't use the philips name in the american market. philips / norelco = same thing, different market.
initially, philips / norelco machines where the only ones on the market but eventually other brands started showing up. its not uncommon to find early recorders of this type that had a philips mechanism inside and a different brand name on the outside.