Patent
   D286213
Priority
Nov 08 1982
Filed
May 11 1983
Issued
Oct 14 1986
Expiry
Oct 14 2000
Assg.orig
Entity
unknown
36
4
n/a
The original design for a dual filter respirator, as shown and described.

FIG. 1 is a front elevational view of the dual filter respirator embodying our new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a side view thereof, the opposite side being of substantially the same appearance;

FIG. 4 is a top plan view thereof; and

FIG. 5 is a bottom plan view thereof.

Maryyanek, Richard D., Zdrok, Joseph Z.

Patent Priority Assignee Title
D326540, Sep 17 1990 Moldex-Metric, Inc Filter mask
D382341, Jun 07 1995 Mine Safety Appliances Company Respirator face mask
D396283, Aug 16 1996 Respirator mask
D613851, Aug 21 2007 3M Innovative Properties Company Filter housing
D652507, Mar 10 2010 3M Innovative Properties Company Respirator mask body
D721169, May 31 2012 3M Innovative Properties Company Respirator grill ribs
D732670, May 22 2014 3M Innovative Properties Company Respirator filter
D741475, Feb 27 2015 3M Innovative Properties Company Respirator mask having a communication grille
D742504, Feb 27 2015 3M Innovative Properties Company Respirator mask
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D744088, May 22 2014 3M Innovative Properties Company Respirator mask having a circular button
D745962, May 22 2014 3M Innovative Properties Company Respirator filter retainer
D746437, May 22 2014 3M Innovative Properties Company Respirator mask having a communication grille
D746438, May 22 2014 3M Innovative Properties Company Respirator filter cover
D747795, Feb 27 2015 3M Innovative Properties Company Respirator mask body
D754844, May 22 2014 3M Innovative Properties Company Respirator mask
D757247, May 22 2014 3M Innovative Properties Company Respirator cartridge
D757928, May 22 2014 3M Innovative Properties Company Respirator cartridge body
D759807, May 22 2014 3M Innovative Properties Company Respirator mask exhalation port
D762845, Feb 27 2015 3M Innovative Properties Company Respirator cartridge
D763437, Feb 27 2015 3M Innovative Properties Company Respirator cartridge body
D767116, Feb 27 2015 3M Innovative Properties Company Respirator mask having an exhalation port
D778430, Nov 15 2013 3M Innovative Properties Company Filter cartridge
D787660, May 22 2014 3M Innovative Properties Company Respirator mask having a face seal flexing region
D795415, Feb 27 2015 3M Innovative Properties Company Respirator cartridge having an engagement latch
D795416, Feb 27 2015 3M Innovative Properties Company Respirator mask
D885676, Mar 26 2018 SHENZHEN EVERBEST MACHINERY INDUSTRY CO., LTD. Mask
D894394, May 12 2020 SHENZHEN AIDIANSHENG TECHNOLOGY CO., LTD. Breathing filter
D946743, Aug 07 2020 The United States of America as represented by the Secretary of the Navy; UNITED STATE GOVERNMENT OFFICE OF NAVAL RESEARCH Filtered face mask respirator with cap
D946744, Aug 07 2020 The United States of America as represented by the Secretary of the Navy Filtered face mask with cap
D946745, Aug 07 2020 The United States of America as represented by the Secretary of the Navy Filtered face mask
D946746, Aug 07 2020 The United States of America as represented by the Secretary of the Navy Filtered face mask respirator
D959643, Mar 26 2020 LG Electronics Inc. Air mask
D959644, Mar 26 2020 LG Electronics Inc. Removable cover for air mask
D963157, Jun 09 2020 LG Electronics Inc. Mask air purifier
D981556, Jan 28 2021 ADVENTIST HEALTH SYSTEM/SUNBELT, INC. Respirator
Patent Priority Assignee Title
2664887,
4373520, Sep 28 1979 HER MAJESTY THE QUEEN AS REPRESENTED BY THE MINISTER OF NATIONAL DEFENCE OF HER MAJESTY S CANADIAN GOVERNMENT, OTTAWA, ONTARIO, CANADA Respirator speech unit/outlet valve
D271246, Mar 02 1981 U.S.D. Corp. Combined respirator face piece and strap units
DE2460003,
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Executed onAssignorAssigneeConveyanceFrameReelDoc
May 05 1983MARYYANEK, RICHARD D American Optical CorporationASSIGNMENT OF ASSIGNORS INTEREST 0041280946 pdf
May 05 1983ZDROK, JOSEPH Z American Optical CorporationASSIGNMENT OF ASSIGNORS INTEREST 0041280946 pdf
Apr 06 1990American Optical CorporationAO, INC , A DE CORP ASSIGNMENT OF ASSIGNORS INTEREST 0052740156 pdf
May 15 1990AO, INC Cabot Safety CorporationASSIGNMENT OF ASSIGNORS INTEREST 0055350024 pdf
Jul 11 1995Cabot Safety CorporationCabot Safety Intermediate CorporationASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0075700220 pdf
Jul 11 1995Cabot Safety Intermediate CorporationBankers Trust CompanySECURITY INTEREST SEE DOCUMENT FOR DETAILS 0075700516 pdf
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