Stevens Memorial Library (North Andover)
Patents
Type
http://bibfra.me/vocab/lite/Form
Label
Patents
Actions
Share resources about the Form
Incoming Resources
Focus of
2
Patents -- Juvenile literature
Patents
Genre of
2
The evolution of useful things, Henry Petroski
Earmuffs for everyone!, how Chester Greenwood became known as the inventor of earmuffs, Meghan McCarthy
Sub focus of
1
Telephone -- Patents
Link Analysis