Refractory tube

Details Refractory tube Refractory tube

1982-01-07

1984-07-31

Bullock, B. J.

Machines not elsewhere specified

Material working, abrading, or founding machinery

Molding or casting

Patent

active

D02749122

REFERENCES:
patent: 553055 (1896-01-01), Coughlin
patent: 1873549 (1932-08-01), Coffey
patent: 2447747 (1948-08-01), Goldberg

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