HK1173613A2 - Tower crane lifting zone warning system - Google Patents

Tower crane lifting zone warning system

Info

Publication number
HK1173613A2
HK1173613A2 HK12112750A HK12112750A HK1173613A2 HK 1173613 A2 HK1173613 A2 HK 1173613A2 HK 12112750 A HK12112750 A HK 12112750A HK 12112750 A HK12112750 A HK 12112750A HK 1173613 A2 HK1173613 A2 HK 1173613A2
Authority
HK
Hong Kong
Prior art keywords
warning system
tower crane
crane lifting
lifting zone
zone warning
Prior art date
Application number
HK12112750A
Inventor
Chan Wing Cheong
li feng Xiao
Leung Kai Chiu
Original Assignee
China State Machinery Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China State Machinery Ltd filed Critical China State Machinery Ltd
Priority to HK12112750A priority Critical patent/HK1173613A2/en
Publication of HK1173613A2 publication Critical patent/HK1173613A2/en

Links

HK12112750A 2012-12-11 2012-12-11 Tower crane lifting zone warning system HK1173613A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
HK12112750A HK1173613A2 (en) 2012-12-11 2012-12-11 Tower crane lifting zone warning system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HK12112750A HK1173613A2 (en) 2012-12-11 2012-12-11 Tower crane lifting zone warning system

Publications (1)

Publication Number Publication Date
HK1173613A2 true HK1173613A2 (en) 2013-05-16

Family

ID=48468881

Family Applications (1)

Application Number Title Priority Date Filing Date
HK12112750A HK1173613A2 (en) 2012-12-11 2012-12-11 Tower crane lifting zone warning system

Country Status (1)

Country Link
HK (1) HK1173613A2 (en)

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Legal Events

Date Code Title Description
PF2 Short-term patent ceased to have effect under s.126(2) (not payment of maintenance fee and has 6-month grace period to pay)

Effective date: 20161211