Drilldown: Patents

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Patents > IPCs: None & CPCs : CPC B22D33/00 or CPC B64C2700/6295

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None (262) · Munn & Co. (5) · Victor J. Evans (4) · Joshua R. H. Potts (3) · Marks & Clerk (3) · None (2) · John P. Tarbox (2) · G. Petiau (2) · C. A. Knowles (2)
National tech categories:
None (219) · USPC 244/45R (27) · USPC 244/13 (15) · FR 6.4 (8) · USPC 244/87 (7) · USPC 244/91 (6) · USPC 244/90R (5) · USPC 244/48 (3) · USPC 244/119 (3) · USPC 244/139 (3) · USPC 244/100R (3)
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