Eight-track magnetic cartridge duplicator

The ornamental design for an eight-track magnetic cartridge duplicator, as shown.

FIG. 1 is a perspective view of the eight-track magnetic cartridge duplicator;

FIG. 2 is a top view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a left side view thereof; and

FIG. 5 is a rear view thereof.

Patent	Priority	Assignee	Title
D278148,	May 11 1982	Media Systems Technology Inc.	Floppy disk copier machine

Patent	Priority	Assignee	Title
3767206,
3875588,
3990710,	Jun 24 1968		Coin-operated recording machine
218316,
220498,
D249261,	Sep 15 1976		Multiple cassette recording machine

Executed on	Assignor	Assignee	Conveyance	Frame	Reel	Doc
Sep 06 1978	BRIEDIS JUOZAS	PENTAGON INDUSTRIES, INC , A CORP OF IL	ASSIGNMENT OF ASSIGNORS INTEREST	003812	0133	pdf
Oct 02 1978		Pentagon Industries, Inc.	(assignment on the face of the patent)

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