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Class 178/90 - Photographic


Subclass of Class 178 - Telegraphy
Definition: Code recorders in which the record is made by photography.
No. of patents: 2
Last issue date: 10/02/1984


NumberTitleIssue Date
4475115Banding-free printing by linear array of photosources
To prevent banding in a flat field exposed--by means of a linear array of photosources--upon a moving photosensitive web, the invention not only provides that the photosources be pulsed in correspondence with the movement of the photosensitive web, but th...
10/02/1984
4450929Acoustic energy systems
A passive system having high volumetric compliance in response to compressions and expansions, such as are present in low frequency acoustic wave energy, employs a saturated vapor-saturated liquid interface thermodynamically stabilized by distributed heat...
05/29/1984
 
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