Inventor

WALGREN JOHN H

US4 patents

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

VERMEER MFG CO

2 patents

US6154987ADec 5, 2000

Cutting tooth for a trencher chain

VERMEER MFG CO17 citations78

US6684538B2Feb 3, 2004

Cutting tooth for a trencher chain

VERMEER MFG CO4 citations57

CHARLES MACHINE WORKS

1 patent

US6832443B1Dec 21, 2004

Cutting chain

CHARLES MACHINE WORKS25 citations84

(unassigned)

1 patent

US6014826AJan 18, 2000

Chain for trencher apparatus

17 citations76