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Actions	Details Remove from selection Add to selection Title US patent for the Thompson Quadruplex Telegraph Reference UK0108 NAEST 020/148 Date 1876-11-25 Scope and Content Typescript copy of US patent issued to Benjamin Thompson of Toledo, Ohio, for improvements in quadruplex telegraphs. Includes diagram of the telegraph system. Physical description Pages/folios: 1 Language English. Persons keyword Thompson Benjamin Subject Telegraph equipment, Patents Conditions governing access Open Level of description file Hierarchy browser 110000001 NATIONAL ARCHIVE FOR ELECTRICAL SCIENCE AND TECHNOLOGY contains 322 parts UK0108 NAEST 020 Baker Collection: Papers of Sir William Henry Preece contains 213 parts UK0108 NAEST 020/148 US patent for the Thompson Quadruplex Telegraph

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Title
US patent for the Thompson Quadruplex Telegraph
Reference
UK0108 NAEST 020/148
Date
1876-11-25
Scope and Content
Typescript copy of US patent issued to Benjamin Thompson of Toledo, Ohio, for improvements in quadruplex telegraphs. Includes diagram of the telegraph system.
Physical description
Pages/folios: 1
Language
English.
Persons keyword
Thompson Benjamin
Subject
Telegraph equipment, Patents
Conditions governing access
Open
Level of description
file

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