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1825771
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Information
Patent Grant
1825771
References
Source
Patent Number
1,825,771
Date Filed
Not available
Date Issued
Tuesday, October 6, 1931
92 years ago
CPC
H01R39/56 - Devices for lubricating or polishing slip-rings or commutators during operation of the collector
US Classifications
051 - Abrasive tool making process, material, or composition
524 - Synthetic resins or natural rubbers
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