Door chime

Details Door chime Door chime

2007-08-28

2007-08-28

Spear, Robert M. (Department: 2913)

Measuring, testing, or signalling instruments

Security or signal instrument or casing

Aural, i.e., audible

Design Patent

active

29269494

CLAIM:
The ornamental design for a door chime, as shown and described.

REFERENCES:
patent: D181929 (1958-01-01), Jolly
patent: D183152 (1958-07-01), Wellhofer
patent: D196949 (1963-11-01), Weinstock
patent: D320668 (1991-10-01), von Kluck
patent: D399588 (1998-10-01), St. Ives
patent: D536805 (2007-02-01), Yuen

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