Disposable respirator

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Description

FIG. 1 is a front perspective, of a respirator embodying my new design;

FIG. 2 is an elevational view of one side of the respirator, the opposite side being of substantially the same appearance;

FIG. 3 is a top plan view of the respirator; and

FIG. 4 is a rear elevational view thereof.

Referenced Cited
U.S. Patent Documents
D205332 July 1966 Nelson
D219082 October 1970 Bird
D236033 July 1975 Dryden
3779244 December 1973 Weeks, Jr. et al.
3802429 April 1974 Bird
3971369 July 27, 1976 Aspelin et al.
3985132 October 12, 1976 Boyce et al.
Patent History
Patent number: D248497
Type: Grant
Filed: May 20, 1976
Date of Patent: Jul 11, 1978
Assignee: American Optical Corporation (Southbridge, MA)
Inventor: Patrick F. Slosek (Dudley, MA)
Primary Examiner: Bernard Ansher
Attorney: William C. Nealon
Application Number: 5/688,507
Classifications
Current U.S. Class: D29/8
International Classification: D2402; D2499; D2902;