Expandable core element for use with an injection molding system

Details Expandable core element for use with an injection molding system Expandable core element for use with an injection molding system

1993-12-10

1995-03-14

Douglas, Alan P.

Machines not elsewhere specified

Material working, abrading, or founding machinery

Molding or casting

D15138

Patent

active

D03563200

REFERENCES:
patent: D204019 (1966-03-01), Adams
patent: 1421601 (1922-07-01), Speck
patent: 1642947 (1927-09-01), Fischer
patent: 4130264 (1978-12-01), Schroer
patent: 4578028 (1986-03-01), Dirksing et al.
patent: 4643658 (1987-02-01), Gordon
patent: 4919608 (1990-04-01), Catalanotti et al.
patent: 4938679 (1990-07-01), Pietrorazio
patent: 4956142 (1990-09-01), Mangone, Jr.
patent: 5090888 (1992-02-01), Pfannkuchen

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