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Inventor

KROLL HARLEY E

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

TENNANT CO

3 patents
US4377017AMar 22, 1983

Scrubbing machine with water regeneration

TENNANT CO57 citations94
US4310944AJan 19, 1982

Surface maintenance machine having air recirculation

TENNANT CO60 citations94
US4295244AOct 20, 1981

Scrubbing machine with water regeneration

TENNANT CO32 citations90

TENNANT

2 patents
US4206530AJun 10, 1980

Surface maintenance machine having air recirculation

TENNANT44 citations90
US4194263AMar 25, 1980

Scrubbing machine with water regeneration

TENNANT47 citations90