Greg, there is an internaltional organization called MIDIA - Molded
Interconnect Device
Ixxxxx <-International?> Association.  MIDIA is composed of members
who make what I would term "gross-featured" 3-D circuits, injection-
molded, then plated.  Most of the successful applications seem
clustered around high volume electromechanical devices.  Believe Pres.
 of Photocircuits is or was Pres. of the organization.  You can fax
me at my office 619-549-4292 if you have trouble (this is my home
computer).
George Gregoire,
Dimensional Circuits Corp. (DCC invented IMPRINT Patterning
technology, which is a very different offshoot - more conventional,
than MIDIA devices, as "imprinting" in performed in an ordinary
laminating press, making relatively flat circuits; details available).
  GG