Refining plate

Details Refining plate Refining plate

1992-07-27

1993-12-28

Holtje, Nelson C.

Machines not elsewhere specified

Material working, abrading, or founding machinery

Abrading

Patent

active

D03427455

REFERENCES:
patent: D232460 (1974-08-01), Sandstrom
patent: D232462 (1974-08-01), Sandstrom
patent: D232463 (1974-08-01), Sandstrom
patent: D232464 (1974-08-01), Sandstrom
patent: D232468 (1974-08-01), Sandstrom
patent: D232470 (1974-08-01), Sandstrom
patent: D232471 (1974-08-01), Sandstrom
patent: 827059 (1906-07-01), Davis
patent: 874764 (1907-12-01), Halstead
patent: 4274602 (1981-06-01), Johansson
patent: 4635864 (1987-01-01), Peterson et al.
patent: 4953796 (1990-09-01), Virving

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