USD333004SExpiredUtility

Ventilatory instrument for measuring peak expiratory flow

37
Assignee: FERRARIS DEVELOPMENT AND ENGINEERING COMPANY LTDPriority: Mar 29, 1990Filed: Sep 28, 1990Granted: Feb 2, 1993
Est. expiryMar 29, 2010(expired)· nominal 20-yr term from priority
Inventors:George A. McnameeJames A. StockwellRonald F. Checksfield
37
PatentIndex Score
6
Cited by
11
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a ventilatory instrument for measuring peak expiratory flow, as shown and described.

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