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MMD > Archives > October 2004 > 2004.10.04 > 01Prev  Next

Origin of Crank-organ Pressure Box
By Hans van Oost

The oldest patent known to me is the French patent nr. 424.029, of
4th March 1911, granted to "Societe des anciens etablissements Gavioli
& Cie", which makes use of a pressure box with a roll mechanism inside,
just like all modern variations.

In the text they claim to have invented this principle.  I am curious
if an older construction may be found.

Best regards from the Netherlands,

Hans van Oost

(Message sent Mon 4 Oct 2004, 16:10:25 GMT, from time zone GMT+0200.)

Key Words in Subject:  Box, Crank-organ, Origin, Pressure

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