SEARCH:
GO TO ADVANCED SEARCH
LOGIN:
Login
Create Free Account
HOME
SEARCH PATENTS
CHEMICAL SEARCH
DATA SERVICES
HELP
United States Patent 1289553
View Patent Images:
Download PDF 1289553
PDF help
Export Citation:
Click for automatic bibliography generation
Primary Class:
473/331
International Classes:
A63B53/04
;
A63B59/00