128599 ⎘
underground or underwater structures Independent ; Retaining walls; Manhole shafts; Other inspection or access chambers; Accessories therefor; Covers for manholes or the like; Frames for covers Security devices, e.g. indicating unauthorised opening
Manhole Marker Assembly
#2APPARATUS, SYSTEM AND METHOD FOR MONITORING A PIT LID
#3COLLECTIVE SAFETY AND MANHOLE SIGNALLING IN BUILDING AND CIVIL ENGINEERING WORKS
#4Monitoring device and well cover assembly
#5Manhole Marker Assembly
#6MODULAR ACCESS COVER
#7SECURED SERVICE COVER ASSEMBLY
#8Detecting and alleviating flooding and blocked storm sewers
#9Reinforcement member and construction method
#10Methods of using dilution of a second type to calibrate one or more sensors
#11System and method of monitoring a utility structure
#12Cover for use on public roads
#13System and method of monitoring a utility structure
#14Method of monitoring access covers of underground infrastructure
#15TUBULAR INSERT FOR EXCAVATED HOLE WITH SAFETY COVER
#16Composite Manhole Cover with In-molded Components
#17Mechanical closure device
#18Tubular insert for excavated hole with safety cover
#19Locakable manhole covers and methods for locking a manhole cover
#20Underground security barrier
#21Pick hole guard for manhole covers
#22Manhole repair bracket
#23Locking cover for construction vault
#24Safety device for use in well
#25Hybrid utility cover
#26Security apparatus
#27Handhole and manhole anti-theft insert
#28Dish for use in a manhole
#29Manhole Security Device and Methods Thereof
#30Water service monitor assembly
#31Adjustable support apparatus for a utility access cover
#32Manhole security device and methods thereof
#33Pick hole guard for manhole covers
#34Manhole security device and methods thereof
#35Manhole security cover
#36Fiber optic security system for sensing the intrusion of secured locations
#37Security key tool for manhole access opening security device
#38PICK HOLE GUARD FOR MANHOLE COVERS
#39Fiber optic security system for sensing the intrusion of secured locations
#40Manhole insert and tether locking apparatus and method
#41Fiber optic security system for sensing the intrusion of secured locations