Spiral lamp tubes

Lighting – Light source – Electric light bulb

Design Patent

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Design Patent

active

D0568499

CLAIM:
The ornamental design for a spiral lamp tubes, as shown and described.

REFERENCES:
patent: D447580 (2001-09-01), Kim
patent: D471653 (2003-03-01), Lin et al.
patent: D488874 (2004-04-01), Li
patent: D493546 (2004-07-01), Kim
patent: D509605 (2005-09-01), Egawa

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