Inventor
GRAY ROBERT E
US22 patents
⚠️ This page may combine multiple inventors who share the name “GRAY ROBERT E”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CAIRNS & BROTHER INC
6 patentsUS5404577AApr 4, 1995
Combination head-protective helmet & communications system
CAIRNS & BROTHER INC260 citations96
US5200736AApr 6, 1993
Assembly for monitoring helmet thermal conditions
CAIRNS & BROTHER INC66 citations94
US5097826AMar 24, 1992
Pressure monitoring device for self-contained breathing apparatus
CAIRNS & BROTHER INC62 citations94
US5271390ADec 21, 1993
Positive pressure breathing assembly and demand regulator therefor
CAIRNS & BROTHER INC29 citations89
US4928685AMay 29, 1990
Closed-circuit positive pressure breathing apparatus with pneumatically operated storage chamber
CAIRNS & BROTHER INC16 citations73
US5000174AMar 19, 1991
Positive pressure breathing assembly and demand regulator therefor
CAIRNS & BROTHER INC18 citations70
INT SAFETY INSTR INC
3 patentsUS6032664AMar 7, 2000
Pressure display for self contained breathing apparatus
INT SAFETY INSTR INC22 citations88
US5640148AJun 17, 1997
Dual activation alarm system
INT SAFETY INSTR INC23 citations88
US6050261AApr 18, 2000
Combination backframe and self contained breathing apparatus
INT SAFETY INSTR INC8 citations68