Inventor

Robert W. Harper

Inventor

Metamora, IL, US

Overview

1978–2020

Patent span

Performing operations

Primary field (CPC B)

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

Y10Tprimary

Y10TTechnical subjects covered by former us classification19%

E02BHydraulic engineering13%

A47LDomestic washing or cleaning6%

B25HWorkshop equipment, e.g. for marking-out work6%

B60KArrangement or mounting of propulsion units or of transmissions in vehicles6%

B60TVehicle brake control systems or parts thereof6%

B62DMotor vehicles6%

B66CCranes6%

E06CLadders6%

F16BDevices for fastening or securing constructional elements or machine parts together, e.g. nails, bolts, circlips, clamps, clips or wedges6%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

1978–1981Patents assigned to CATERPILLAR TRACTOR CO (3)· patent assignee history

1978–1981Based in Metamora, IL, US· patent location history

1987Patents assigned to ROCKWELL INTERNATIONAL CORP (1)· patent assignee history

1992Patents assigned to HARTLEY SIMON LTD (2)· patent assignee history

1992Based in Neuilly, FR· patent location history

1998Based in Brooklyn, NY, US· patent location history

2000Based in Sedona, AZ, US· patent location history

2020Patents assigned to CHECK MATE IND INC (1)· patent assignee history

2020Based in West Babylon, NY, US· patent location history

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
CATERPILLAR TRACTOR CO	3	1978–1981
HARTLEY SIMON LTD	2	1992
CHECK MATE IND INC	1	2020
ROCKWELL INTERNATIONAL CORP	1	1987

Locations