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Browse by Category: Main > Optical & Optics
Class Information
Number: 396/278
Name: Photography > Battery insertion/removal/depletion responsive > Having battery backup
Description: Subject matter having a device for maintaining power upon removal or depletion of primary battery.










Patents under this class:

Patent Number Title Of Patent Date Issued
8378855 Control device Feb. 19, 2013
8131145 Lightweight cordless security camera Mar. 6, 2012
7899320 Battery packs Mar. 1, 2011
7733062 Intelligent battery module for multimedia device Jun. 8, 2010
7649565 Power supply circuit for digital camera Jan. 19, 2010
7449863 Battery pack and charger with memory having operating permission and image data recording means Nov. 11, 2008
6091909 Battery control for digital camera and integral printer Jul. 18, 2000
5822631 Forced-driving apparatus for film rewinding motor of a camera Oct. 13, 1998
5041861 Camera system with means for detecting the condition of back-up power supply Aug. 20, 1991
4963917 Photographic camera Oct. 16, 1990
4816862 Power supply system for memory unit of camera Mar. 28, 1989
4697909 Power source device with reserve power source for camera Oct. 6, 1987
4668070 Power supply device of a camera May. 26, 1987
4662736 Power supply system for memory unit of camera May. 5, 1987











 
 
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