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1490300
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Information
Patent Grant
1490300
References
Source
Patent Number
1,490,300
Date Filed
Not available
Date Issued
Tuesday, April 15, 1924
100 years ago
CPC
G01P1/10 - for indicating predetermined speeds
Y10S200/17 - Gas engine and motor vehicle
US Classifications
200 - Electricity: circuit makers and breakers
303 - Fluid-pressure and analogous brake systems
340 - Communications: electrical
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