One way of getting this information would be to contact the companies
that manufactured the pull tops and see if they have any archives of
information. Another place would be the U.S. Patent office.
On 9/20/05, Lockhart, Bill <[log in to unmask]> wrote:
> First, all the links sent by Smoke and others were both
> interesting and useful. Thanks to all.
--
Anita Cohen-Williams
Listowner Histarch
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