Category talk:Inventions

Help with Sono arsenic filter
Hi. Please take a look at my article Sono arsenic filter, and prevent it from being deleted. Appreciate any help which you could perhaps provide. Thanks. --Sm8900 00:50, 4 February 2007 (UTC)

Inventions by year category?
Is there an inventions by year category? Badagnani (talk) 21:05, 13 April 2008 (UTC)