Lung exerciser

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Description

FIG. 1 is a front, top and left side perspective view of a lung exerciser showing my new design; and,

FIG. 2 is a rear, bottom and right side perspective view thereof.

Referenced Cited
U.S. Patent Documents
D315583 March 19, 1991 Larson et al.
1211369 January 1917 Miller
1570567 January 1926 Holycross
Patent History
Patent number: D321227
Type: Grant
Filed: Jun 8, 1989
Date of Patent: Oct 29, 1991
Inventor: Erik Norell (S-531 34 Lidkoping)
Primary Examiner: Charles A. Rademaker
Law Firm: Sughrue, Mion, Zinn, Macpeak & Seas
Application Number: 7/363,221
Classifications
Current U.S. Class: D21/191