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Sidney Liberfarb
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Shrewsbury, MA, US
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last 30 patents
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Patent Grant
Leverage tool for opening sticking windows
Patent number
6,170,803
Issue date
Jan 9, 2001
Sidney Liberfarb
B66 - HOISTING LIFTING HAULING
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Patent Grant
Non-passive copy holder with rotatable drum
Patent number
5,967,483
Issue date
Oct 19, 1999
Sidney Liberfarb
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS