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Publication numberUSD306859 S
Publication typeGrant
Application numberUS 07/294,133
Publication dateMar 27, 1990
Filing dateJan 6, 1989
Publication number07294133, 294133, US D306859 S, US D306859S, US-S-D306859, USD306859 S, USD306859S
InventorsEdmond J. Helstab, Michael Brown
Original AssigneeNorthern Telecom Limited
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Add-on module for a homogeneous unit telephone set
US D306859 S
Abstract  available in
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  1. 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.

Non-Patent Citations
1CMC Brochure: Corporate Message Center Equip.: 5 Basic Components.
2GTE Supply: Customer Premise Eqt.: Northern Telecom, Unity 20-Button Expansion Module at p. 59.
3Teleconnect Guide 1985: Telecom System, p. 24; TIE/Comm. at p. 25; Items #76, #78; & #79.
4Telephony, 9-10-82 Northern Telecom Logic System.
U.S. ClassificationD14/140.8, D14/149, D14/240