Cervical collar strengthening apparatus

Details Cervical collar strengthening apparatus Cervical collar strengthening apparatus

2000-11-30

2001-09-11

Hyder, Philip S. (Department: 2912)

Games, toys, and sports goods

Exercise equipment

Design Patent

active

D0447779

CLAIM:
The ornamental design for a cervical collar strengthening apparatus, as shown and described.

REFERENCES:
patent: D. 281802 (1985-12-01), Gordon
patent: D. 413948 (1999-09-01), Dalebout
patent: 4789154 (1988-12-01), Mattox
patent: 5248287 (1993-09-01), Nicoletti
patent: 5267931 (1993-12-01), Faetini
patent: 5295949 (1994-03-01), Hathaway
patent: 5637067 (1997-06-01), Ausmus
patent: 5935049 (1999-08-01), Hamm

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