100 Years of Bell Telephones

100 Years of Bell Telephones

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Explores the technology a the history of the telephone, from the Coffin sets of the 1870s to the Princess phones of the 1960s and beyond.Although the Bell Co. held patents on both signaling and voice transmission apparatus, Bella#39;s patents on voice ... This policy was clearly emphasized in an admonishment to telephone repairmen in an 1893 service manual: aquot;All old receiver andanbsp;...

Title:100 Years of Bell Telephones
Author:Richard Mountjoy
Publisher:Schiffer Pub Limited - 1995


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