[pure-silver] Re: Some Edwal Patents

"Richard Knoppow"
assigned to H&W and probably is for their "Control" It is USP 3,772,019 

Which is phenidone with or without metol and
hydroquinone.  Variations on POTA, but with
magic claims.

There is also 4,083,722

Here a new inventor seems to patent the same thing -
phenidone with hydroquinone and metol - but the hq
is mandatory. Says you can shoot copex at ASA 400 and Tri-X and 4000. Cures catarrh, "women's problems", neurasthenia and sciatica; Greatly improves the complexion and is appreciated by all who partake of it. 

--
Nicholas O. Lindan
Cleveland Engineering Design, LLC
Cleveland, Ohio 44121

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