Inventor

BONFIELD DOUGLAS A

US2 patents

Patents

2 patents

US5921322AJul 13, 1999

Device for regulating speed of deployment of sprinkler heads in preactive sprinkler systems

CURRAN CO36 citations86

US6216963B1Apr 17, 2001

Device for regulating speed of deployment of sprinkler heads in preactive sprinkler systems

CURRAN CO11 citations69