Protective helmet with ear muffs and face protection

- Sandvik Aktiebolag
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Description

FIG. 1 is a side view of the protective helmet with earmuffs and face protection showing my new design;

FIG. 2 is a front view of the said helmet; and

FIG. 3 is a back view of the said helmet.

Referenced Cited
U.S. Patent Documents
3845505 November 1974 Davison
3946466 March 30, 1976 Sakai
Foreign Patent Documents
75442 March 1917 CHX
Patent History
Patent number: D254100
Type: Grant
Filed: Aug 23, 1977
Date of Patent: Feb 5, 1980
Assignee: Sandvik Aktiebolag (Sandviken)
Inventor: Carl-Arne Breger (Malmo)
Primary Examiner: Melvin B. Feifer
Attorney: Ralph E. Parker
Application Number: 5/827,119
Classifications
Current U.S. Class: D/2232
International Classification: D0203;