The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 13, 1994
Filed:
Feb. 26, 1992
Applicant:
Inventors:
Donald J Stern, Bellingham, WA (US);
James A Tryon, Seattle, WA (US);
Assignee:
DJS&T Limited Partnership, Bellingham, WA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A62B / ; A62B / ; A62B / ;
U.S. Cl.
CPC ...
12820525 ; 12820617 ; 12820711 ;
Abstract
A face mask assembly and method of use having a housing and a replaceable filter mounted in said housing. A fan means draws air into a plenum chamber defined by said housing and said filter for this air to pass into a facial breathing area. An outlet check valve is provided, and a primary filter through which air passes before entering said plenum chamber.
Published as: