24 Nov
2008
24 Nov
'08
10:27 a.m.
A fascinating topic.
Here's a fun patent to read:
http://www.google.com/patents?id=lBJtAAAAEBAJ
Patent number: 2614169
Filing date: Jul 24, 1950
Issue date: Oct 1952
Inventor: A. A. COHEN
Assignee: Engineering Research Asso
Some mention is made of how they made it in 1950.
Coombs original patent:
http://www.google.com/patents?id=gSBXAAAAEBAJ&dq=patent:3119110
Patent number: 3119110
Filing date: May 2, 1949
Issue date: Jan 21, 1964
Inventor: J. M. COOMBS
Assignee: Sperry Rand Corporation
They appear to use spray paint --- not deposition.