LexDanaLexDanabeta
Inventor

David Scott Penrose

Inventor
Eagle Creek, OR, US

Overview

4→
Patents
2002–2011
Patent span
Performing operations
Primary field (CPC B)

Patents· 4 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

B27Bprimary
B27BSaws for wood or similar material40%
Y10TTechnical subjects covered by former us classification30%
B28DWorking stone or stone-like materials20%
F16BDevices for fastening or securing constructional elements or machine parts together, e.g. nails, bolts, circlips, clamps, clips or wedges10%
PatentTitleYear
7,891,279'Shear resistant rivet and saw chain'20117,891,925'Shear resistant rivet and saw chain'20117,563,064'Shear resistant rivet and saw chain'20096,427,342'Lightweight chain saw bar'2002

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2002–2011Patents assigned to BLOUNT INC (3)· patent assignee history
2002Based in Estacada, OR, US· patent location history
2009–2011Based in Eagle Creek, OR, US· patent location history
2011Patents assigned to BLOUT INC (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
BLOUNT INC32002–2011
BLOUT INC12011
Locations
LocationPatentsSpan
Eagle Creek, OR, US32009–2011
Estacada, OR, US12002