Visor attachment for safety helmets

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Information

Patent Grant
D319899

References
Source

Patent Number
D319,899
Date Filed
Tuesday, May 30, 1989
35 years ago
Date Issued
Tuesday, September 10, 1991
33 years ago

Inventors
- Martin Pernicka
Original Assignees
- Institut de Recherche en Sante et en Securite du Travail du Quebec
Examiners
- Word; A. Hugo
- Allen; Paula
Agents
- Dubuc; Jean H.

US Classifications
- D29 - Equipment for safety, protection, and rescue
Field of Search
- US
- D29 14
- D29 17
- D29 16
- D02 247
- 002 10
- 002 9
- 002 12
- 002 424
- Term of Grant
  14Years

Information

Abstract

Description

Claims

The ornamental design for a visor attachment for safety helmets, as shown d described.

US Referenced Citations (5)

Number	Name	Date	Kind
D168736	Cooper et al.	Feb 1953
2798222	Evans et al.	Jul 1957
3369255	Bolle	Feb 1968
4117553	Bay	Oct 1978
4856109	Desy et al.	Aug 1989