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Calendar of Patent Records (1929)

[s.l.] : Nature Publishing Group

Nature 124 (1929), S. 824-824

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ISSN: 1476-4687

Source: Nature Archives 1869 - 2009

Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics

Notes: [Auszug] November 23, I 848.The idea of perforating sheets of postage stamps was due to Henry Archer, who devised a machine for â cutting or stamping around the margin of every stamp a consecutive series holes whereby the tearing up of the sheet will greatly facilitated,â and obtained an English patent ...

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1038/124824b0

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