Apparatus, systems and methods for use in three-dimensional...

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Reexamination Certificate

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C101S035000, C101S483000, C101S484000, C101S487000, C400S689000, C400S691000, C400S693000, C454S049000, C454S056000, C454S057000

Reexamination Certificate

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07073442

ABSTRACT:
Apparatus, systems and methods for use in three-dimensional printing are shown and described. Various embodiments of the invention allow for more precise and controlled delivery of heat to achieve interlayer drying; isolation of the working region from the outside for reasons of cleanliness and in connection with the vapors of organic solvents; better control of the temperature of the working region; better accuracy in the flowrates of binder fluid dispensed; matching of delivered flowrates for multiple dispensers; verification of delivered flowrate or drops; provision for easier changeover of the machine from one powder to another; cleanability; and other needs.

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