Greetings! Does anyone know how to research British patents? I'm interested in #23,644 (Improvements in and relating to sound reproduction machines, by Percival James Packman, 1909) and #16,641 (1911). These were used for vertical Marathon discs, and I'd like to know their details and specifications. I searched http://www.ipo.gov.uk/p-find.htm but couldn't find either one. Have any of the early British patents been digitized like the U.S. patents? Am I searching in the wrong place? -Ryan
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