Micro processor logic gates
The schematics of Intel 4004 may be available here:    

http://www.intel.com/Assets/PDF/General/4004_schematic.pdf  

Individual components schematics here:  

The 4001 ROM
The 4002 RAM
The 4003 Shift-Register
The 4004 CPU
Source:
http://www.4004.com/mcs4-masks-schematics-sim.html

History:

The chip layout was drawn by hand at a magnification of around 500 times the original size. It was drawn over sheet made of Mylar Quadrille material for its dimensional stability.   

Ref.:  IEEE Solid-State Circuits Magazine ( Volume: 1, Issue: 1, Winter 2009 )