P

Inventor

PFALTZGRAFF JAMES R

US9 patents
⚠️ This page may combine multiple inventors who share the name “PFALTZGRAFF JAMES R”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

ARMSTRONG MANUFACTURING COMPAN

3 patents
US4819515AApr 11, 1989

Method and apparatus for grinding saw teeth

ARMSTRONG MANUFACTURING COMPAN25 citations91
US5040436AAug 20, 1991

Method and apparatus for tipping saw blades

ARMSTRONG MANUFACTURING COMPAN19 citations80
US4864896ASep 12, 1989

Method and apparatus for tipping teeth of saw blades

ARMSTRONG MANUFACTURING COMPAN21 citations80

SHINDAIWA INC

2 patents
US6952877B2Oct 11, 2005

Vegetation cutting device

SHINDAIWA INC63 citations94
US7607232B2Oct 27, 2009

Vegetation cutting device

SHINDAIWA INC29 citations90

PFALTZGRAFF JAMES R

2 patents
US8510960B2Aug 20, 2013

Trimmer head spool for use in flexible line rotary trimmer heads having improved line loading mechanism

PFALTZGRAFF JAMES R27 citations90
US7979991B2Jul 19, 2011

Vegetation cutting device

PFALTZGRAFF JAMES R24 citations90

PROULX RICHARD A

1 patent
US8918999B2Dec 30, 2014

Aerodynamic trimmer head for use in flexible line rotary trimmers

PROULX RICHARD A17 citations91

PROULX MFG INC

1 patent
US9295195B2Mar 29, 2016

Aerodynamic trimmer head for use in flexible line rotary trimmers

PROULX MFG INC4 citations72