▁st ove ▁that ▁was ▁smaller ▁and ▁had ▁its ▁own ▁chim ney . ▁ ▁In ▁the ▁early ▁part ▁of ▁the ▁ 1 9 th ▁century , ▁the ▁coal ▁o ven ▁was ▁developed . ▁It ▁was ▁cyl ind rical ▁in ▁shape ▁and ▁made ▁of ▁heavy ▁cast ▁iron . ▁The ▁gas ▁o ven ▁saw ▁its ▁first ▁use ▁as ▁early ▁as ▁the ▁beginning ▁of ▁the ▁ 1 9 th ▁century ▁as ▁well . ▁Gas ▁st ov es ▁became ▁very ▁common ▁household ▁o vens ▁once ▁gas ▁lines ▁were ▁available ▁to ▁most ▁houses ▁and ▁neighborhood s . ▁James ▁Sh arp ▁pat ented ▁one ▁of ▁the ▁first ▁gas ▁st ov es ▁in ▁ 1 8 2 6 . ▁Other ▁various ▁improvements ▁to ▁the ▁gas ▁st ove ▁included ▁the ▁A GA ▁cook er ▁invent ed ▁in ▁ 1 9 2 2 ▁by ▁Gust af ▁Dal én . ▁The ▁first ▁electric ▁o vens ▁were ▁invent ed ▁in ▁the ▁very ▁late ▁ 1 9 th ▁century , ▁however , ▁like ▁many ▁elect rical ▁invent ions ▁dest ined ▁for ▁commercial ▁use , ▁mass ▁ownership ▁of ▁elect rical ▁o vens ▁could ▁not ▁be ▁a ▁reality ▁until ▁better ▁and ▁more ▁efficient ▁use ▁of ▁electric ity ▁was ▁available . ▁ ▁More ▁recently , ▁o vens ▁have ▁become ▁slightly ▁more ▁high - tech ▁in ▁terms ▁of ▁cook ing ▁strategy . ▁The ▁mic row ave ▁as ▁a ▁cook ing ▁tool ▁was ▁discovered ▁by ▁Per cy ▁Sp encer ▁in ▁ 1 9 4 6 , ▁and ▁with ▁the ▁help ▁from ▁engine ers , ▁the ▁mic row ave ▁o ven ▁was