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Patents Grants
last 30 patents
Information
Patent Grant
Slope-adaptive inclined special elevator
Patent number
10,513,419
Issue date
Dec 24, 2019
DONGNAN ELEVATOR CO, LTD
Guohua Cao
B66 - HOISTING LIFTING HAULING
Information
Patent Grant
Variable gradient inclined running container traction rope adjustme...
Patent number
10,351,391
Issue date
Jul 16, 2019
China University of Mining and Technology
Guohua Cao
B66 - HOISTING LIFTING HAULING
Patents Applications
last 30 patents
Information
Patent Application
Slope-Adaptive Inclined Special Elevator
Publication number
20190337762
Publication date
Nov 7, 2019
Dongnan Elevator Co, Ltd
Guohua CAO
B66 - HOISTING LIFTING HAULING
Information
Patent Application
VARIABLE GRADIENT INCLINED RUNNING CONTAINER TRACTION ROPE ADJUSTME...
Publication number
20180222719
Publication date
Aug 9, 2018
CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Guohua CAO
B66 - HOISTING LIFTING HAULING