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http://www.google.co.uk/patents/US3018758?utm_source=gb-gplus-share
Patent US3018758 - MULTI-PURPOSE FISH AQUARIUM COVER
MULTI-PURPOSE FISH AQUARIUM COVER
Marcel M. Amotild et al
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Abstract
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Description
Claims
Patent number
: 3018758
Filing date
: 2 Apr 1958
Issue date
: 30 Jan 1962
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