Homework Help: social studies

Posted by livy on Sunday, January 31, 2010 at 6:15pm.

when was the:

Nancy Johnson's hand-crank ice cream freezer

Emeline Hart's commercial oven

Ellen Eglin's clothes wringer

sarah mather's submarine telscope

martha coston's saftey flare gun

emily tassey's dredging pump

henrietta vansittart's (improved version)screw propeller for ships

eliza murfey's packing and material process for parts of steam engines

thedosia jones' vacuum canning process to preserve food

thomas edison's phonograph, electric power station and kinetoscope

lummiere brothers' movie projectors

karl braun's major components for television

h. booth and m. spengler's vacuum cleaner

wright brothers' airplane

invented

social studies - bobpursley, Sunday, January 31, 2010 at 6:24pm
http://members.fortunecity.com/jonhays/womeninv.htm

The few others, google them
social studies - Ms. Sue, Sunday, January 31, 2010 at 6:24pm
My goodness, you have a lot of research to do.

Type the keywords for each invention into Google. You may add "invented" or "history."

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