Inventor

SMITH HARVELL M

US5 patents

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

JOHNS MANVILLE

3 patents

US4179808ADec 25, 1979

Cutting guide tool for fabrication of air duct transitions and method of its use

JOHNS MANVILLE22 citations78

US4160688AJul 10, 1979

Low profile heat sealing iron

JOHNS MANVILLE8 citations71

US4235652ANov 25, 1980

Method of using a low profile heat sealing iron

JOHNS MANVILLE3 citations60

MANVILLE SERVICE CORP

1 patent

US4781510ANov 1, 1988

Insulation board feeder

MANVILLE SERVICE CORP12 citations69

MANVILLE CORP

1 patent

US5115957AMay 26, 1992

Apparatus for reinforcing fibrous duct

MANVILLE CORP4 citations59