Respirator

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Information

Patent Grant
D270957

References
Source

Patent Number
D270,957
Date Filed
Monday, November 8, 1982
41 years ago
Date Issued
Tuesday, October 11, 1983
41 years ago

Inventors
- Richard D. Maryyanek
- Joseph Z. Zdrok
Original Assignees
- AMERICAN OPTICAL CORPORATION
Examiners
- Burke; Wallace R.
- Fay, Jr.; Horace B.
Agents
- Kenway & Jenney

US Classifications
- D29 - Equipment for safety, protection, and rescue
Field of Search
- US
- 128 20713
- 128 20617
- 128 20621
- 128 20624
- 128 20628
- 128 20619
- D29 7
- D29 8
- D29 9
International Classifications
- Term of Grant
  14Years

Information

Abstract

Description

Claims

The ornamental design for a respirator, as shown.

US Referenced Citations (7)

Number	Name	Date	Kind
D57528	Knoblock	Apr 1921
2106795	Cover	Feb 1938
2578007	Hill	Dec 1951
2845927	Hill	Aug 1958
3249108	Terman	May 1966
3521630	Westberg	Jul 1970
4004584	Geaney	Jan 1977