[GreenKeys] Flexowriters and 5-level codes

[Jones, Douglas W]

Someone recently commented that they didn't think Friden ever used 5-level codes.  See Sheet 3 of US patent 2886159 for documentation of such a code:

-- https://www.google.com/patents/US2886159

I found this while searching for patents that relate to the Flexowriter I'm working on.  What I find, I am documenting here (more photos forthcoming):

-- http://homepage.cs.uiowa.edu/~jones/flexo/tour.shtml

		Doug Jones
		jones at cs.uiowa.edu