Drilldown: Patents

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Patents > Grant date: July 1913 & IPCs : IPC B64C3/18 or None

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None (3) · Joseph Allison Steinmetz (2) · Peter Peterson (2) · Cosimo Canovetti (2) · De Bert Hartley (2) · Louis Constantin (2)
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None (5) · Joseph Allison Steinmetz (2) · Cosimo Canovetti‎ (2) · De Bert Hartley (2) · Peter Peterson (2) · Louis Constantin (2)
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