Door chime

Details Door chime Door chime

2007-09-18

2007-09-18

Spear, Robert M. (Department: 2913)

Measuring, testing, or signalling instruments

Security or signal instrument or casing

Aural, i.e., audible

Design Patent

active

29269493

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

REFERENCES:
patent: D180406 (1957-06-01), Jolly
patent: D199877 (1964-12-01), Stevenson
patent: D215189 (1969-09-01), Doggart
patent: D228689 (1973-10-01), Doggart
patent: D284069 (1986-06-01), Levin
patent: D284174 (1986-06-01), Levin
patent: D365159 (1995-12-01), Tinen
patent: D451212 (2001-11-01), Merrick
patent: D507359 (2005-07-01), Steffes et al.
patent: D514732 (2006-02-01), Benensohn

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