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Patents for Ralph W. Crocker
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
2,043,042Jun. 02, 1936R.W. Crocker, K.A. HarmonMagnetoignition systems
CA-361,600Nov. 03, 1936R.W. Crocker, K.A. HarmonMagnetoignition systems
2,232,451Feb. 18, 1941R.W. Crocker, K.A. HarmonMagnetoignition systems
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