BLUCOTE
Filed: January 31, 1980
Owned by: W. E. HALL COMPANY
Serial Number: 73248280
PACIFIC SPIRAL RIB
Filed: August 27, 1984
ROLL FORMED METAL PIPE FOR SEWER AND WATER TRANSMISSION LINES
Owned by: W. E. HALL COMPANY
Serial Number: 73496615
INVERT SHIELD
Filed: November 25, 1991
protective polymer coating for pipe lines
Owned by: W. E. HALL COMPANY
Serial Number: 74224940
SPIRAL FIN
Filed: April 11, 1994
helical wound metal pipe for use in underground burial applications
Owned by: W. E. HALL COMPANY
Serial Number: 74511081
ENVIROLINE
Filed: November 24, 1995
metal pipes, pipe couplers and pipe connectors
Owned by: W. E. HALL COMPANY
Serial Number: 75025488
SRP2
Filed: April 29, 1996
metal ribbed polyethylene pipe
Owned by: W. E. HALL COMPANY
Serial Number: 75095713
STORM-SHIELD
Filed: April 29, 1996
metal ribbed polyethylene pipe
Owned by: W. E. HALL COMPANY
Serial Number: 75095715
SECOND-SHIELD
Filed: April 29, 1996
metal ribbed polyethylene pipe
Owned by: W. E. HALL COMPANY
Serial Number: 75095716
ULTRA SHIELD
Filed: June 17, 1996
metal ribbed polyethylene pipe
Owned by: W. E. HALL COMPANY
Serial Number: 75119978
Q-CLEAN
UNDERGROUND WATER QUALITY TREATMENT RESERVOIRS FOR FILTERING STORM WATER RUNOFF
Owned by: W. E. HALL COMPANY
Serial Number: 75930609
Q-PREP
UNDERGROUND WATER QUALITY AND TREATMENT RESERVOIRS FOR REMOVAL OF OIL AND SEDIMENT FROM STORM WATER RUNOFF
Owned by: W. E. HALL COMPANY
Serial Number: 75930767
Q-STORE
UNDERGROUND WATER QUALITY TREATMENT RESERVOIRS FOR DETENTION OF STORM WATER RUNOFF
Owned by: W. E. HALL COMPANY
Serial Number: 75930768
Q-CHARGE
Underground Water Quality Treatment Reservoirs comprising perforated, horizontal reservoirs for reducing storm water runoff…
Owned by: W. E. HALL COMPANY
Serial Number: 75930769
