Inventor

SPEARS FREDRICK

US3 patents

⚠️ This page may combine multiple inventors who share the name “SPEARS FREDRICK”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SPEARS FREDRICK

1 patent

US7540796B2Jun 2, 2009

Inflatable buoyancy device with water-dependant triggering mechanism

SPEARS FREDRICK20 citations83

OLSON MANFRED BRADLEY

1 patent

US7232354B2Jun 19, 2007

Inflatable buoyancy device with water-dependant triggering mechanism

OLSON MANFRED BRADLEY25 citations83

HITACHI CHEMICAL DIAGNOSTIC IN

1 patent

US6770244B2Aug 3, 2004

Dianostic sample tube including anti-rotation apparatus

HITACHI CHEMICAL DIAGNOSTIC IN9 citations61