Hmmmm. RTZ, your inquiries led me to take a closer look at my pickup. And it seems mine may be even less like your desired model than we thought.
The link you posted calls the 130 a "Humbucker", and I had always assumed that was the case, if only based on the fact that it's a HB size and is pretty quiet (although not completely so).
But I have the original packaging, including the warranty card and instruction sheet, and the box itself-all of which I've posted below for any help it may provide anyone.
But, hand-written on the inside of the packaging, was a pricetag "$81.95" and the notation "single coil".
Plus, the product sheet claims the pickup is "our unique full-range coil" (note the singular) and nowhere does it say there's two coils. So, I fired up the trusty DMM and read 7.81K Ohms, which is more in the range of a hot SC (which the literature claims it to be), than in the range of a HB. Although a HB could certainly be made in that range, so not really conclusive as a test.
And, "130" is exactly half of "260" . . .
And, so I plugged it in just now and listened more critically. I hadn't ever considered it before, thinking it was a HB, but I'm now pretty convinced it's a single coil.
No patent nos. that I could see. The back of the pickup has a printed (not stamp or embossed, just ink printed) number, printed over a white painted background. The number is 1290068, which is probably the serial no. or product no.
I don't know how successful you would be modifying these for use in an electric. The mounting tabs and spring are riveted/welded to the back of the pickup, and I can envision that the surgery to remove the mount might well damage the pickup.
And, without taking it apart, my guess would be that the coils are probably solidly lodged in a big blob of epoxy- and the piezo connection will likely be buried somewhere within . . .
Anyway, here's the goods on this thing:
I'm not a fan of bronze strings, right now I have my Yamaha strung with "Silk n' Steel" acoustic strings, not sure what brand they were. I've used electric 12s in the past as well with the 130. It does fine with any and all.
Compared to a piezo system, which can sound a bit brittle to my ears, the mag pickup gives a nice warm tone with plenty of low end.
So, that's absolutely all the info I have for this thing. Best of luck on your quest.