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with mechanical locks
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Industry
CPC
B61L19/10
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Parent Industries
B
PERFORMING OPERATIONS TRANSPORTING
B61
Railways
B61L
GUIDING RAILWAY TRAFFIC ENSURING THE SAFETY OF RAILWAY TRAFFIC
B61L19/00
Arrangements for interlocking between points and signals by means of a single interlocking device
Current Industry
B61L19/10
with mechanical locks
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Patents Grants
last 30 patents
Information
Patent Grant
2111500
Patent number
2,111,500
Issue date
Mar 15, 1938
B61 - RAILWAYS
CPC
B61L19/10
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Patent Grant
