Face mask with extending toothlike blocks

Equipment for safety – protection – and rescue – Body restraint or protective covering – Face – mouth – or ear

Design Patent

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Design Patent

active

D0570551

CLAIM:
The ornamental design for a face mask with extending toothlike blocks, as shown and described.

REFERENCES:
patent: 6381749 (2002-05-01), Cyr
patent: 6886183 (2005-05-01), DeHaan et al.
patent: 7003802 (2006-02-01), Broersma
patent: D522697 (2006-06-01), Chen
patent: D526094 (2006-08-01), Chen
patent: D529234 (2006-09-01), Broersma
patent: D555837 (2007-11-01), Chen
patent: 2005/0278833 (2005-12-01), Pierce
patent: 2006/0090234 (2006-05-01), Cyr

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