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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
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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