Vintage Philips MC cartridges, but who built them?

After seeing them on the net, I've been curios too. This site is interesting, and they say Philips did make some. But the rest, makes me wonder, even thought I don't recall hearing one. I've had their USA products in the past ('80s), and would say they were decent. Link [http://audiotools.com/oldcart_b.html]

I thought Seiji Yoshioka was the first to do the yokeless design? But then, Ive been wrong in the past. [http://www.blackbirdaudio.com/Blackbird_Audio_Gallery/Transfiguration_Main.html]

I give up. [http://www.docstoc.com/docs/45840715/Moving-Coil-Type-Pickup-Cartridge---Patent-4455639]

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.......