Title:
Rotary slide holder for projectors
United States Patent 2146452
Inventors:
Gustav, Spindler
Publication Date:
02/07/1939
Export Citation:
Click for automatic bibliography generation
Assignee:
SPINDLER & SAUPPE
Primary Class:
353/117
International Classes:
G03B23/06; G03B23/00
View Patent Images:
Download PDF 2146452        PDF help