Projector hanger device for computer information technology teaching

The utility model discloses a projector hanger device for computer information technology teaching, which comprises a fixed plate and a pull rod, the bottom of the fixed plate is rotatably connected with a rotary drum, and the inner surface of the rotary drum is rotatably connected with the outer su...

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Bibliographische Detailangaben
1. Verfasser:	HU ZIXU
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ACCESSORIES THEREFOR ADVERTISING APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND,DEAF OR MUTE BLASTING CINEMATOGRAPHY CRYPTOGRAPHY DIAGRAMS DISPLAY EDUCATION EDUCATIONAL OR DEMONSTRATION APPLIANCES ELECTROGRAPHY ENGINEERING ELEMENTS AND UNITS FRAMES, CASINGS, OR BEDS OF ENGINES OR OTHER MACHINES ORAPPARATUS NOT SPECIFIC TO AN ENGINE, MACHINE, OR APPARATUSPROVIDED FOR ELSEWHERE GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS GLOBES HEATING HOLOGRAPHY LIGHTING MECHANICAL ENGINEERING PHOTOGRAPHY PHYSICS PLANETARIA SEALS STANDS OR SUPPORTS THERMAL INSULATION IN GENERAL WEAPONS
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