Vintage Philips MC cartridges, but who built them?

I used to go through cartridges like water in the '70s and '80s. I also used to keep up with the designers then. Changing them sounded as different as changing speakers sometimes. Then I lost track of them, mostly do to trying to live with the CD takeover in the US. In the '80s I walked into the record shop to buy a couple of albums, and when I looked around, I thought they were going out of business. It turned out they changed over to all CD's in a couple of weeks. It looked bare (small jewel boxes), and I didn't even own a CD player yet. All the other record shops did the same. Then the CD age headaches started.......

@ All, thank you for your responses.

With respect to the Ortofon (T)MC200, I did once dismantle a broken one.
(one channel was dead) The generator inside looks very much like the generator
in the "Cantata" series, and the one in the A-90.

I still have another needle-less MC200 waiting for an occasional retip.

Best regards, L.

By the way, did anyone ever hear one of these?

Information on Yamaha MC-1S translated from Japanese
http://translate.google.com/translate?hl=en&sl=ja&u=http://audio-heritage.jp/YAMAHA/etc/mc-1x.html&ei=i3UwTofGL6jkiAKx6M2pBg&sa=X&oi=translate&ct=result&resnum=1&ved=0CCoQ7gEwAA&prev=/search%3Fq%3Dhttp://audio-heritage.jp/YAMAHA/etc/mc-1x.html%26hl%3Den%26client%3Dfirefox-a%26hs%3Di2q%26rls%3Dorg.mozilla:en-US:official%26prmd%3Divns

I own this cartridge and regard it very high.

Here is Phillips cartridge line in 1981.
http://philips.pytalhost.com/philips81/philips81-35.jpg