Breathing water-check valve body of diving snorkel

Description

FIG. 1 is a top plan view of a breathing water-check valve body of diving snorkel showing my new design;

FIG. 2 is a front elevational view thereof; the rear, the right side, the left side being a mirror image; and,

FIG. 3 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
4655212 April 7, 1987 Delphia
4805610 February 21, 1989 Hunt
Patent History
Patent number: D339399
Type: Grant
Filed: Aug 15, 1991
Date of Patent: Sep 14, 1993
Inventor: Hsin-Nan Lin (Kuei Shan Hsiang)
Primary Examiner: Kay H. Chin
Law Firm: Bacon & Thomas
Application Number: 7/745,380
Classifications
Current U.S. Class: D21/236