Re: "ultimate alt process"
- To: alt-photo-process-l@usask.ca
- Subject: Re: "ultimate alt process"
- From: Richard Knoppow <dickburk@ix.netcom.com>
- Date: Mon, 30 Jul 2007 19:52:17 -0700
- Comments: "alt-photo-process mailing list"
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- Reply-to: Richard Knoppow <dickburk@ix.netcom.com>
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----- Original Message -----
From: "BOB KISS" <bobkiss@caribsurf.com>
To: <alt-photo-process-l@usask.ca>
Sent: Monday, July 30, 2007 7:17 PM
Subject: RE: "ultimate alt process"
DEAR JUDY,
1878. Hmmmmmmmmmm. That date seems significant. Wasn't
some
obscure process patented that year? Let's see...might it
be platinum
printing? Must be something arcane like that! ;-))
CHEERS!
BOB
As near as I can tell the first patent for Platinum
printing was issued to William Willis in England in 1873. A
US patent, USP 173,381 was issued February 8, 1876 to the
same fellow. Probably this is the US version of the British
patent.
The patent can be found on Google Patents or from the
U.S.Patent and Trade-mark Office at
http://www.uspto.gov
The Google site has the advantage of allowing text searches
of patents issued before 1976 and allowing the patents to be
downloaded as PDF's rather than FAX tiff files.
I don't have a good source for historical British or
European patents.
---
Richard Knoppow
Los Angeles, CA, USA
dickburk@ix.netcom.com