United States Patent 3169535
Inventors:
Lassiter, Frederic H.
Fain, Jacob M.
Publication Date:
02/16/1965
Other Classes:
131/335, 131/341, 131/200
International Classes:
A24D3/04; A24D3/00
Foreign References:
| AT173262B | | | | |
| GB740329A | | | | |
| GB781654A | | | | |
| GB793389A | | | | |
| CH323308A | | | | |