United States Patent 2520504
Inventors:
Hooper, William J.
Publication Date:
08/29/1950
Assignee:
William, Huebner C.
Other Classes:
101/219, 101/DIG.037, 427/144
International Classes:
B41M1/42; B41M1/00
US Patent References:
| 2152077 | Production of piled surfaces in pattern form | | | |
| 2173032 | Production of pile-surfaced materials | | | |
| 2224391 | Process of and apparatus for printing | | | |
| 2451288 | Method of and means for printing multicolor images by electric discharge | | | |