Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Protective respiratory helmet with rear recess design
D421820 Protective respiratory helmet with rear recess design
Patent Drawings:Drawing: D421820-2    Drawing: D421820-3    Drawing: D421820-4    
« 1 »

(3 images)

Inventor: Johnson
Date Issued: March 21, 2000
Application: D/084,759
Filed: March 10, 1998
Inventors: Johnson; Brett R. (St. Paul, MN)
Assignee: 3M Innovative Properties Company (St. Paul, MN)
Primary Examiner: McInroy; Ruth
Assistant Examiner:
Attorney Or Agent: Rogers; James A.
U.S. Class: D29/102; D29/122
Field Of Search: D29/102; D29/103; D29/104; D29/105; D29/106; D29/107; D29/110; D29/122; 2/410; 2/5; 2/6.6; 2/424; 2/425; 2/455; 2/9; 128/202.27; 128/206.24; 128/206.17; 128/201.22; 128/201.24; 128/201.25; 128/206.27
International Class:
U.S Patent Documents: D190220; D192071; D216765; D240310; D277425; D299765; D370308; D375826
Foreign Patent Documents:
Other References: Product Information: "Pureflo Powered Respirators," Helmet Integrated Systems Ltd., 13 pages..
Product information: "Cobra Powered Helmet Respirators," MSA..
Product Information: "AH29 Air Supplied Airstream," Airstream Anti Dust Helmet, Racal..
Product Information: "The Dustmaster System," Arco..
Product Information: "Breathe Easy Plus," 1 BE1+ Helmet System, Racal..
Product Information: Helmet product literature, Kasco, 7 pages..









Abstract:
Claim: The ornamental design for a protective respiratory helmet with rear recess design, as shown and described.
Description: FIG. 1 is a perspective view of a protective respiratory helmet with rear recess design showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is bottom plan view thereof;

FIG. 4 is a front elevational view thereof; and,

FIG. 5 is a left side elevational view thereof, the right side view being the mirror image.

The portion of the drawings shown in phantom is for illustrative purposes only and is not intended to form part of the claimed design.

A rear view has been excluded because it would not be illustrative of the claimed ornamental design.

* * * * *
 
 
  Recently Added Patents
Projector
Smart television system having methods or means for accessing paid or subscribed digital content from the internet
SONOS stack with split nitride memory layer
Methods and systems for improved engine speed control during engine starting
Pear tree named `PremP109`
Plants and seeds of hybrid corn variety CH450823
Methods of operating non-volatile memory devices during write operation interruption, non-volatile memory devices, memories and electronic systems operating the same
  Randomly Featured Patents
Pinch roller device
Device and method for non-occlusive localized drug delivery
Bladder matrix protein peptides and methods of detection of bladder cancer
Method of manufacturing a burning wick
Hot-dip galvanized steel sheet
Stable insecticidal preparations in the form of aqueous emulsion or suspension
Fabric covered rigid structure and process of manufacture
Satellite commanding using remotely controlled modulation of satellite on-board telemetry parameters
Charged particle beam exposure apparatus control system and a method of operation for providing a drawing start signal
Method for producing male sterile plants using plant beclin 1/ATG6 expression