USD319899SExpiredUtility

Visor attachment for safety helmets

52
Assignee: INSTITUT DE RECH EN SANTE ET AN SECURITE DU TRAVAIL DU QUEBECPriority: May 30, 1989Filed: May 30, 1989Granted: Sep 10, 1991
Est. expiryMay 30, 2009(expired)· nominal 20-yr term from priority
Inventors:Martin Pernicka
52
PatentIndex Score
7
Cited by
4
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a visor attachment for safety helmets, as shown d described.

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