Inventor

David P. Keddie

Inventor

Brookfield, WI, US

Overview

1985–1998

Patent span

Performing operations

Primary field (CPC B)

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

B23Dprimary

B23DPlaning15%

B27GAccessory machines or apparatus for working wood or similar materials15%

Y10TTechnical subjects covered by former us classification15%

A46BBrushes8%

B23QDetails, components, or accessories for machine tools, e.g. arrangements for copying or controlling8%

B25BTools or bench devices not otherwise provided for, for fastening, connecting, disengaging, or holding8%

F04BPositive-displacement machines for liquids8%

F04CRotary-piston, or oscillating-piston, positive-displacement machines for liquids8%

F16BDevices for fastening or securing constructional elements or machine parts together, e.g. nails, bolts, circlips, clamps, clips or wedges8%

LOC088%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

1985Patents assigned to HEMPE MANUFACTURING CO (1)· patent assignee history

1985–1998Based in Brookfield, WI, US· patent location history

1987Patents assigned to HEMPE MFG CO (1)· patent assignee history

1994–1998Patents assigned to HEMPE MFG CO INC (2)· patent assignee history

1996–1998Patents assigned to HEMPE MANUFACTURING CO INC (2)· patent assignee history

1997Patents assigned to NAT COMPRESSED AIR CANADA LIMI (1)· patent assignee history

1997Based in Mississauga, CA· patent location history

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HEMPE MANUFACTURING CO INC	2	1996–1998
HEMPE MFG CO INC	2	1994–1998
HEMPE MANUFACTURING CO	1	1985
HEMPE MFG CO	1	1987
NAT COMPRESSED AIR CANADA LIMI	1	1997

Locations

Location	Patents	Span
Brookfield, WI, US	6	1985–1998
Mississauga, CA	1	1997