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1942135
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Patent Grant
1942135
References
Source
Patent Number
1,942,135
Date Filed
Not available
Date Issued
Tuesday, January 2, 1934
91 years ago
CPC
B61L7/068 - Protection against eddy-currents, short-circuits, or the like, for electric safety arrangements
US Classifications
361 - Electricity: electrical systems and devices
246 - Railway switches and signals
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