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Patents for Albert Y. Gray
Patents 1 - 9 of 9
First set of recordsLast set of records
NumberDatePatenteeTitleType
133,773Dec. 10, 1872A.W. GrayImprovement in machines for corrugating metal plates
141,268Jul. 29, 1873A.W. GrayImprovement in links of endless chains for horse-powersanimal powered apparatus
157,990Dec. 22, 1874A.W. GrayImprovement in bolt or rod cutters
166,456Aug. 10, 1875A.W. GrayImprovement in grain-separatorscorn and grain separators
227,765May 18, 1880A.Y. Gray, L. GrayWrenchratchet wrenches
CA-12,020Nov. 24, 1880A.Y. Gray, L. GrayImprovements on Threshing Machinescylinder tooth wrenches
326,497Sep. 15, 1885L. Gray, A.Y. GrayGovernor
434,266Aug. 12, 1890L. Gray, A.Y. GrayBrake for horse-powers or speed-regulatorsanimal powered apparatus
448,957Mar. 24, 1891L. Gray, A.Y. GrayAttachment for the separators of thrashing-machinescorn and grain separators
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