Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Flash photography apparatus










Image Number 6 for United States Patent #4542974.

In the disclosed flash unit, a preliminary flash for evaluating a proper exposure precedes a main flash. A flash exposure control apparatus respond to tilting of the flash's head after a preliminary flash to present a warning signal, or to renew the preliminary flash and thereby to readjust the aperture to the new exposure condition.








 
 
  Recently Added Patents
Compounds and their salts specific to the PPAR receptors and the EGF receptors and their use in the medical field
Wireless communication system using pilot allocation, method and pilot pattern thereof
Reverse mapping method and apparatus for form filling
Arrangements and method relating to communication bearers
Method for transmitting a signal from a transmitter to a receiver in a power line communication network, transmitter, receiver, power line communication modem and power line communication syst
RF/optical shared aperture for high availability wideband communication RF/FSO links
Stability control system with body-force-disturbance heading correction
  Randomly Featured Patents
Artificial putting system
Tetrahydrobenzindole derivatives
Mirroring virtual machines from a primary host to a secondary host
Automatic fine tuning circuit
GPIB system and method which provides asynchronous event notification
Polymeric diffusion matrix containing clonidine
Antisense modulation of E2F transcription factor 2 expression
Device for heating up electronic boards
Current-loop position sensor and rolling bearing equipped with the same
Method and plant such as a kiln plant for treating granular or pulverous raw material