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Patents for William Irwin Banfield
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
CA-181,459Jan. 01, 1918W.I. BanfieldCentral tubes for shrapnel shellsrockets and grenades
CA-186,201Aug. 27, 1918W.I. BanfieldShell fuse hole shipping plugrockets and grenades
CA-257,304Jan. 19, 1926W.I. BanfieldElectric switch boxelectrical devices
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