Title:
Railway point, signal, and the like
Document Type and Number:
United States Patent 1636068


Inventors:
Hedley, Nicholson John
Sydney, Roberts Walter
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Sponsored by:
Flash of Genius
Publication Date:
07/19/1927
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Assignee:
RAILWAY SIGNAL COMPANY LTD
Primary Class:
246/135
International Classes:
B61L7/06; B61L7/00