DocumentCode
1317700
Title
A focusing flashlight
Volume
42
Issue
1
fYear
1923
Firstpage
62
Lastpage
62
Abstract
A new focusing type of flashlight capable of throwing a beam of 200 to 300 feet greatly enlarges the scope of usefulness of this popular type of portable lighting unit.
Keywords
Batteries; Bridges; Focusing; Lighting; Rivers; Safety; Vehicles;
fLanguage
English
Journal_Title
American Institute of Electrical Engineers, Journal of the
Publisher
ieee
ISSN
0360-6449
Type
jour
DOI
10.1109/JoAIEE.1923.6591859
Filename
6591859
Link To Document