[Alt-photo] Poitevin 1855

Peter Friedrichsen pfriedrichsen at sympatico.ca
Fri Sep 23 13:27:16 UTC 2016


Unfortunately I omitted the citation somehow. I just remember finding it 
on-line in an old book of patents, so with a deep search, you could 
probably find that information.


On 23/09/2016 3:08 AM, Alberto Novo via Alt-photo-process-list wrote:
>> Here is the British patent I found once in a book. Never could find the
>> French one which does have some variation apparently
> Thank you so much, Peter!
> May you also give me the full citation (author(s), title, publisher, year, pages)?
> Alberto
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