Arrowhead attaching means
United States Patent 3401938
Inventors:
Bear, Fred B.
Publication Date:
09/17/1968
View Patent Images:
Export Citation:
Assignee:
VICTOR COMPTOMETER CORP
Primary Class:
Other Classes:
473/583
International Classes:
F42B6/08; F42B6/00
Foreign References:
| GB717353A |