Title:
Length adjustment mechanism
United States Patent 3214809


Inventors:
Zahnor, Edwards George
Application Number:
US33213663A
Publication Date:
11/02/1965
Filing Date:
12/20/1963
Assignee:
KEDMAN COMPANY
Primary Class:
Other Classes:
2/418, 24/274R, 24/274WB, 74/89.18, 292/256.65, 351/156
International Classes:
A61F9/06
View Patent Images:
US Patent References:
2926406Length adjustment mechanism1960-03-01
2857697Etching machine1958-10-28
2205742Adjustable headband1940-06-25
Foreign References:
AU228689B