Rittenhouse Utility 225
The Rittenhouse Utility Model 225 was the entry level door chime starting in 1948. Although I can not attribute this to a particular designer, the crossed arrows emblem was introduced by Norman Bel Geddes for Rittenhouse.The Utility was available with a white and silver or ivory and gold finish (shown here).
The Utility was described in a late 1940s catalog:
Utility Model Compact, inexpensive chime for use wherever space is limited. Well suited for use in offices, stores and other places where a general utility signal is required. Also suitable for small homes and apartments. Sounds two notes for the front door and a single-note for the rear. Operates on standard 10 volt transformer. Available in either white and silver or ivory and gold finishes.