Title:
Shield for welders' helmets
United States Patent 3308477


Inventors:
Boyd, Wayne T.
Application Number:
US47136065A
Publication Date:
03/14/1967
Filing Date:
07/12/1965
Assignee:
Boyd, Wayne T.
Primary Class:
Other Classes:
2/9
International Classes:
A61F9/06
View Patent Images:
US Patent References:
2644159Face and eye protective shield for welders1953-07-07
2618781Welder's protection means1952-11-25
2309599Counterbalance for welder's hoods1943-01-26
1191562N/A1916-07-18