United States Patent 2480178
Inventors:
Zinberg, Ivan H.
Publication Date:
08/30/1949
Assignee:
Zinberg, Ivan H.
Other Classes:
40/546, 362/263, 362/280, 385/900
International Classes:
F21V8/00; F21V8/00
Foreign References:
| GB315817A | | | | |
| DE418975C | | | | |
| FR817194A | | | | |