George A. Philbrick.

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George A. Philbrick Researches, Inc. ( GAP/R )

Philbrick sold the first commercial operational amplifier in the early 50's, the model K2-W.
Check out this fantastic web site devoted to GAP/R

Early GAP/R module using three K2-W op-amps. Rear view showing the plug in modules (one missing it's tubes). Mainfold holding five K2-W op-amp modules. Rear view.

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Early GAP/R module using three K2-W op-amps.	Rear view showing the plug in modules (one missing it's tubes).	Mainfold holding five K2-W op-amp modules.	Rear view.

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