Patent Model - Signal-Call for Telephone-Lines
Maker and role
Francis Richmond (b.1851, d.1907), Patentee
Production date
Feb 28 1882
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Object detail
Media/Materials
Wood, iron, steel, copper, cloth wrapped wire
Measurements
4 5/8 x 6 1/4 x 11 5/8" (11.7 x 15.9 x 29.5cm)
Description
The object of Richmond's invention "is to call any particular station on any telephone line or circuit without calling any other station on the same or any other circuit of the same system..." (Patent Number 254,155)
Collection
Object number
2015.14.3395a,b
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