LexDanaLexDanabeta
Inventor

David R. Friddell

Inventor
Grand Blanc, MI, US

Overview

4→
Patents
2008–2011
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.

B21Dprimary
B21DWorking or processing of sheet metal or metal tubes, rods or profiles without essentially removing material50%
F04BPositive-displacement machines for liquids17%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests17%
Y10TTechnical subjects covered by former us classification17%
PatentTitleYear
8,061,179'High pressure dual-action hydraulic pump'20117,937,979'Gravity fill system with pressure check valve'20117,584,637'Bending apparatus and method of bending a metal object'20097,360,385'Quick change bend tooling bolster'2008

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2008–2011Patents assigned to GM GLOBAL TECH OPERATIONS INC (4)· patent assignee history
2008–2011Based in Grand Blanc, MI, US· patent location history
2011Patents assigned to CRANTAS WILLIAM M (1)· patent assignee history
2011Patents assigned to FRIDDELL DAVID R (1)· patent assignee history
2011Patents assigned to GHIRAN MIKE M (1)· patent assignee history
2011Patents assigned to JENSEN DAVID R (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
GM GLOBAL TECH OPERATIONS INC42008–2011
CRANTAS WILLIAM M12011
FRIDDELL DAVID Rself12011
GHIRAN MIKE M12011
JENSEN DAVID R12011
Locations
LocationPatentsSpan
Grand Blanc, MI, US42008–2011