USD330587SExpiredUtility

Filter to be attached around user's waist for purifying air in a supplied air breathing system for use in otherwise hazardous environments

53
Individually held — no corporate assignee on recordPriority: Oct 29, 1990Filed: Oct 29, 1990Granted: Oct 27, 1992
Est. expiryOct 29, 2010(expired)· nominal 20-yr term from priority
Inventors:Larry E. Seeley
53
PatentIndex Score
9
Cited by
9
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a filter to be attached around user's waist for purifying air in a supplied air breathing system for use in otherwise hazardous environments, as shown.

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