Title:
Illuminated paging device
United States Patent 2644935
Inventors:
Greenwald, Max H.
Publication Date:
07/07/1953
Export Citation:
Click for automatic bibliography generation
Assignee:
RICHMOND PRODUCTS COMPANY
Primary Class:
340/321
Other Classes:
40/546, 40/555, 340/815.53
International Classes:
G09F13/18
View Patent Images:
Download PDF 2644935        PDF help
US Patent References:
1951431Traffic signal
1554469Seat signal
1241965N/A
1236647N/A