[CR] Bivalent dating

(Example: Framebuilding:Technology)

From: "Steven Maasland" <themaaslands@comcast.net>
To: "CR" <Classicrendezvous@bikelist.org>
Date: Fri, 4 Jun 2010 09:26:31 -0400
Subject: [CR] Bivalent dating


The Archives are your friend gentlemen:

http://search.bikelist.org/getmsg.asp?Filename=classicrendezvous.10405.1625.eml

The first public mention of Bivalent hubs was in 1963, but they were apparently already being used for a couple of years prior. Some people purport a 1959 date.

Steven Maasland