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Abel Foullon

Field	Value
name	Abel Foullon
birth_date	1513
birth_place	France
death_date	c. 1563–1565
occupation	Writer, Engineer, Director of the Mint
known_for	Inventor of the holometer; patent specification "Usage & Description de l'holomètre"
spouse	Catherine Clouet
children	Benjamin Foullon (portrait painter and miniaturist)
relatives	Jean Clouet (father-in-law), François Clouet (brother-in-law)

Abel Foullon (1513–1563 or 1565, in France) was a writer, director of the Mint for Henry II of France and also an engineer to the king of France after Leonardo da Vinci. In 1545 he married Catherine Clouet, the daughter of the portrait painter Jean Clouet and sister of the portrait painter François Clouet. Their son Benjamin Foullon or Foulon also became a portrait painter and miniaturist.

Invention and patenting of the holometer

]] Foullon invented a holometre, an instrument for making of angular measurements for surveying. In 1551, Henry II granted Foullon a 10-year exclusive patent monopoly on the holometer in exchange for publishing a description of it. A description of an invention in a patent is called a patent “specification”. This first patent specification was entitled "Usage & Description de l'holomètre". Publication was delayed until after the patent expired in 1561.

Bibliography

Abel Foullon, Usage et description de l'holomètre, Paris: P. Béguin, 1567.
Chevalier de Brunet-Varennes: Holometer, oder neues sehr genaues Instrument, um Zeichnungen in der Geometrie, so wie alle Zeichnungen nach der Perspectiv-Kunst zu erleichtern. 15 S. Mit 1 Taf. In: Polytechnisches Journal. Hrsg. J. G. Dingler. Bd. 34.; Erschienen: Stuttgart, Cotta, 1829.

References

[http://beta.biblissima.fr/fr/ark:/43093/edata70de4d07e8029b4a65bd5e77bca46198f61fd249 L'usage & description de l'holometre. Paris (France) Pierre Béguin (libraire, 15..-15..), 1567 sur ''Biblissima'']
M. Frumkin, "The Origin of Patents", Journal of the Patent Office Society, March 1945, Vol. XXVII, No. 3, pp 143 et Seq.

Info: Wikipedia Source

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1513-births 1560s-deaths french-engineers

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