Dustproof mechanism and construction site fingerprint punch-card machine

The utility model discloses a dustproof mechanism and a construction site fingerprint punch-card machine, the dustproof mechanism and the construction site fingerprint punch-card machine provided by the utility model comprise a turning cover, a guide rail and a moving block arranged on the guide rai...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	YU XUWEN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDEDFOR ELSEWHERE CHECKING-DEVICES CLEANING CLEANING IN GENERAL GENERATING RANDOM NUMBERS PERFORMING OPERATIONS PHYSICS PREVENTION OF FOULING IN GENERAL REGISTERING OR INDICATING THE WORKING OF MACHINES TIME OR ATTENDANCE REGISTERS TRANSPORTING VOTING OR LOTTERY APPARATUS
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