Rectangular fall prevention well lid

The invention discloses a rectangular fall prevention well lid which comprises a mounting seat, a square well lid, a locking component, a plurality of fall prevention components and a lid plate. The locking component is arranged on the bottom surface of the well lid and comprises a threaded lifting...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	YU WANHE
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	EMBANKMENTS EXCAVATIONS FIXED CONSTRUCTIONS FOUNDATIONS HYDRAULIC ENGINEERING SOIL SHIFTING UNDERGROUND OR UNDERWATER STRUCTURES
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!