Personal respiratory protection device
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Description
The shading shown in the drawings is provided merely to highlight the contour of the design; it is not intended to be illustrative of texture.
The broken lines shown in the drawings are for illustrative purposes only and form no part of the claimed design.
Claims
The ornamental design for personal respiratory protection device, as shown and described.
Referenced Cited
U.S. Patent Documents
Foreign Patent Documents
Other references
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- Racal Health & Safety Product Literature for “Delta™ Disposable Respirators” (1993).
- Glendale Optical Company Product Literature for “Glendale Respiratory Protection” (Feb. 1983).
- Bostock et al., U.S. Appl. No. 08/612,527, filed Mar. 8, 1996 entitled Flat-Folded Personal Respiratory Protection Devices And Processes For Preparing Same, which is a continuation-in-part of U.S. Appl. No. 08/507,449 filed Sep. 11, 1995 entitled Fold Flat Respirators And Processes For Preparing Same, now abandoned.
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- Europa Safety Products (ESP) product literature entitled “The Next Generation In Safety” for their CN range of respirators (no date).
Patent History
Patent number: D620104
Type: Grant
Filed: Nov 25, 1996
Date of Patent: Jul 20, 2010
Assignee: 3M Innovative Properties Company (St. Paul, MN)
Inventors: Desmond T. Curran (Durham), John W. Bryant (High Shincliffe), Christopher P. Henderson (Durham)
Primary Examiner: Stella M Reid
Assistant Examiner: Derrick Holland
Attorney: Karl G. Hanson
Application Number: 29/062,787
Type: Grant
Filed: Nov 25, 1996
Date of Patent: Jul 20, 2010
Assignee: 3M Innovative Properties Company (St. Paul, MN)
Inventors: Desmond T. Curran (Durham), John W. Bryant (High Shincliffe), Christopher P. Henderson (Durham)
Primary Examiner: Stella M Reid
Assistant Examiner: Derrick Holland
Attorney: Karl G. Hanson
Application Number: 29/062,787
Classifications
Current U.S. Class:
Mask (D24/110.1)