Social Studies 20.1 Crossword
                           
                           
                           
                           
                           
                           
                           
                           
                           
                           
                           
                           
                           
                           
                           
                           
                           
                           
                           
                           
                           
                           
                           
 
 
Down: 1) helped invent the first practical typewriter in 1867 he also improved the machine and sold his rights to a manufacturer2) a new way of making steel that was developed in the 1850's and caused steel production to soar and increase3) invented macines for the packaging and shoemaking industries and also improved motors and engines4) an exhibition in Philadelphia in 1876 that celebrated Americas 100th birthday and Bell had shown his telephone he had invented5) a machine that produces an electric current7) patented the sewing machine in 18468) good times in a business Across: 2) bad times in a business6) the pattern of good and bad days in a business9) invented the telephone was a Scottish immigrant who taught deaf students in Boston10) also patented a sewing machine in 1851 and continued to improve it11) is a gov't document giving an inventor the exclusive roght to make and sell his or her invention for a spcific number of years12) the inventor who found the most ways to use electricity he opened a laboratory in Menlo Park, New Jersey he employed many assistants who he organized into teams to do research he figured out how to make a safe, steady light bulb
 

 

Create your own Crossword Puzzle for Free!		  Show Errors as I Type