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2778903
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Information
Patent Grant
2778903
References
Source
Patent Number
2,778,903
Date Filed
Not available
Date Issued
Tuesday, January 22, 1957
67 years ago
CPC
H01H9/185 - Fluorescent or phosphorescent symbols or distinguishing marks
US Classifications
250 - Radiant energy
116 - Signals and indicators
200 - Electricity: circuit makers and breakers
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