- Asimitel
- AT&T
- Automatic Electric
- British GPO
- Canadian Independent Telephone Co.
- Ceeco
- Century
- Comdial
- Connecticut
- Cortelco
- Crosley
- Disney
- Dominion Telephone
- Elite
- Ericsson
- European
- Golden Eagle
- Gray
- House of Telephones
- ITT
- Kellogg
- Kingston
- Kristian Kirks
- Leich
- Monarch
- North Electric
- Northern Electric
- Northern Telecom
- Novus
- Other
- Polyconcepts
- Polyflame
- Proctor
- Regal
- Siemens
- Stromberg Carlson
- Strowger
- Telemania
- Viking
- Western Electric