Inventor

KEECH DAVID A

US4 patents

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

ARMSTRONG MACHINE WORKS

2 patents

US4305548ADec 15, 1981

Energy loss detection system

ARMSTRONG MACHINE WORKS20 citations77

US4149557AApr 17, 1979

Inverted bucket steam trap

ARMSTRONG MACHINE WORKS15 citations69

ARMSTRONG INT INC

2 patents

US4468962ASep 4, 1984

Energy loss detection system

ARMSTRONG INT INC14 citations69

US4456173AJun 26, 1984

Energy loss detection system

ARMSTRONG INT INC8 citations69