Add-on module for a homogeneous unit telephone set

The ornamental design for an add-on module for a homogeneous unit telephone set, as shown and described.

FIG. 1 is a front, top and right side perspective view of an add-on module for a homogeneous unit telephone set showing our new design;

FIG. 2 is a bottom plan view;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a front elevational view thereof; and

FIGS. 6 and 7 are respectively left and right side elevational views thereof.

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Executed on	Assignor	Assignee	Conveyance	Frame	Reel	Doc
Dec 08 1988	HELSTAB, EDMOND J	BELL-NORTHERN RESEARCH LTD	ASSIGNMENT OF ASSIGNORS INTEREST	005017	0289	pdf
Dec 08 1988	BROWN, MICHAEL	BELL-NORTHERN RESEARCH LTD	ASSIGNMENT OF ASSIGNORS INTEREST	005017	0289	pdf
Dec 15 1988	BELL-NORTHERN RESEARCH LTD	Northern Telecom Limited	ASSIGNMENT OF ASSIGNORS INTEREST	005044	0002	pdf
Jan 06 1989		Northern Telecom Limited	(assignment on the face of the patent)
Apr 29 1999	Northern Telecom Limited	Nortel Networks Corporation	CHANGE OF NAME SEE DOCUMENT FOR DETAILS	010567	0001	pdf
Aug 30 2000	Nortel Networks Corporation	Nortel Networks Limited	CHANGE OF NAME SEE DOCUMENT FOR DETAILS	011195	0706	pdf

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