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Record player with turntable brake and balance wheels
Accordingly, objects of this invention are to overcome the problems and disadvantages of prior art record players and to obtain improved record player structures with ...
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Plant control composition and methods of use
OF THE INVENTION It now has been found that synergism in the defoliation of plants is exhibited by a combination of a thiozol-urea abscission agent and an adduct ...
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Methine dye synthesis
I claim: 1. Process for the preparation of a disperse methine dye containing at least one dicyanomethylidene group comprising the steps of (A) preparing an anhydrous ...
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Yellow dye mixture for thermal color proofing
What is claimed is: 1. A yellow dye-donor element for thermal dye transfer comprising a support having thereon a dye layer comprising a mixture of yellow dyes dispersed ...
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Optical card having optical grooves for access and wobbled marks for tracking and a recording-reproducing apparatus therefor
In order to enable recording in an optical card apparatus, a laser beam flux needs to be focused as a minute spot on an information recording surface. For this purpose, ...
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Packet switching testing method and apparatus
It is a primary object of the present invention to provide a packet switching testing method and a packet switching testing apparatus that are capable of attaining down-...
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Process for producing an organic photosensitive material preventing blushing
The assignment of the present invention therefore is to provide a process for producing an organic photosensitive material which effectively prevents blushing. According ...
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Phenothiazine leucodyes for electrochromic recording
We claim: 1. A substrate for electrochromic recording comprising bromide ions and characterized by also comprising a leucodye having the structure ##STR3## wherein R is ...
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Electrochromic marking systems
INCLUSIVE OF THE PREFERRED EMBODIMENTS More specifically, this invention in its composition of matter aspect resides in the novel 5-Q-9-(N-R.sup.2 -N-R.sup.3 -amino)-12-...
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Color thermal diffusion-transfer with leuco dye reducing agent
The present invention provides a photothermographic composite structure comprising (1) a dyeable image-receiving element comprising a polymeric image-receiving layer ...
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