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Anniversaries/April 3
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From The Austrian Economics Wiki, the global repository of classical-liberal thought
<
Austrian Economics Wiki:Anniversaries
April 3 (
add
):
1449
– A maker of stained glass,
John of Utynam
, received the first known
English
patent
, granting him a 20-year
monopoly
.
April
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Category
:
Anniversaries by day
