Does anyone use LM425OCN's

[Hiwatt25]

My buddy closed down his amp repair shop a while back and gave me a ton of stuff including some LMN4250CN's.  I was just wondering if they are of any use for pedals?  I believe they are op amps of some kind but wouldn't know how to design anything around them. 

I also got a bunch of weird pots, lots of big ass resistors, capacitors, tube sockets, a Hickock tube tester and even an old harmony amp.  Let's here it for my buddy.

[lovekraft0]

The LM4250CN is a programmable-characteristic opamp- it was often used in the 70s in onboard guitar circuits, because it could be wired for really low current consumption without compromising its performance, greatly expanding battery lifespan. Audio quality was acceptable at that time, perhaps less so now.

http://www.national.com/pf/LM/LM4250.html

[Celadine]

There is this:

http://m.bareille.free.fr/modular1/vcf_polivoks/vcf_polivoks.htm

The schematic has details on replacing the UA776 with LM4250s.