Drilldown: Patents

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Patents > Year granted: 1920 - 1929 & Tech fields : frame or railroad

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None (38)
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CPCs:
None (18) · CPC B64C3/00 (10) · CPC B64C2001/0063 (5) · CPC B64C2700/6235 (4) · CPC B64C39/00 (4) · CPC B64C3/56 (4) · CPC B64C25/06 (3) · CPC B64C11/00 (3) · CPC B64C2700/6295 (3) · CPC B64C1/065 (3) · CPC B64C1/064 (3) · CPC B64C35/00 (3) · CPC B64D27/04 (3)
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Showing below up to 79 results in range #1 to #79.

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