Pollard Memorial Library (Lowell)
Patents
Type
http://bibfra.me/vocab/lite/Concept
Label
Patents
Name
Patents
Source
lcgft
Focus
Patents
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Incoming Resources
Subject of
2
The evolution of useful things, Henry Petroski
Earmuffs for everyone!, how Chester Greenwood became known as the inventor of earmuffs, Meghan McCarthy
Outgoing Resources
Focus
1
Patents
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