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Inventor

James Franklin Bierl

Inventor
West Des Moines, IA, US

Overview

9→
Patents
1989–2013
Patent span
Human necessities
Primary field (CPC A)

Patents· 9 as inventor

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

A01Bprimary
A01BSoil working in agriculture or forestry60%
F16CShafts20%
F16BDevices for fastening or securing constructional elements or machine parts together, e.g. nails, bolts, circlips, clamps, clips or wedges10%
Y10TTechnical subjects covered by former us classification10%
PatentTitleYear
8,353,639'Turnbuckle lock'20137,258,491'Bearing seal assembly for agricultural applications'20077,073,949'Disk blade bearing hub assembly'20067,036,604'Structure for converting an integral implement to a drawn type'20066,932,512'Agricultural rockshaft bearing block structure and wear inserts therefor'20056,578,642'Rear mounted attachment with single acting cylinder'20036,003,616'Wheel arm assembly interchangeable between walking beam and straight tandem configurations'19995,992,535'Dual acting implement leveling system with transport stabilization'19994,842,077'Disk harrow standard for support beams of different cross sections'1989

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989–2013Patents assigned to DEERE & CO (8)· patent assignee history
1989–2013Based in West Des Moines, IA, US· patent location history
2007Patents assigned to PEER BEARING COMPANY (1)· patent assignee history
2013Patents assigned to BIERL JAMES FRANKLIN (1)· patent assignee history
2013Patents assigned to KELLY FRANCIS JOSEPH (1)· patent assignee history
2013Patents assigned to ROYER ANTHONY SCOTT (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
DEERE & CO81989–2013
BIERL JAMES FRANKLINself12013
KELLY FRANCIS JOSEPH12013
PEER BEARING COMPANY12007
ROYER ANTHONY SCOTT12013
Locations
LocationPatentsSpan
West Des Moines, IA, US91989–2013