Title
A.l.s. to R S Culley from W Langdon,with attached reply.
Reference
UK0108 NAEST 020/212-216
Date
1874-04-18 to 1874-04-20
Scope and Content
A.l.s.to R S Culley from W Langdon, referring to the direct writer duplex. Encloses papers and explains Langdons; view of the problems with the circuit. Includes diagrams. With reply from R S Culley, putting forward his view that the theoretical problems Langdon has put forward are not applicable to short lines.
Physical description
Pages/folios: 5
Language
English.
Persons keyword
Subject
Conditions governing access
Open
Level of description
file
