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Patents Granted on 1921-01-18
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
D56,945Jan. 18, 1921P. PiotrowskiWrenchwrenches
1,365,779Jan. 18, 1921T.E. GroveIndicating Caliperscalipers
1,365,991Jan. 18, 1921A.H. HeldenCombined Fixed-Angle Square and Protractorbevels
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