Inventor

David Perkins

Inventor

Chestier, GB

Overview

1976–2020

Patent span

Performing operations

Primary field (CPC B)

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

A63Fprimary

A63FCard, board, or roulette games9%

B01DSeparation9%

B25HWorkshop equipment, e.g. for marking-out work9%

B42DBooks9%

E06CLadders9%

F28BSteam or vapour condensers9%

F28DHeat-exchange apparatus, not provided for in another subclass, in which the heat-exchange media do not come into direct contact9%

F28FDetails of heat-exchange and heat-transfer apparatus, of general application9%

H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h109%

H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h109%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

1976Patents assigned to PLESSEY HANDEL INVESTMENT AG (1)· patent assignee history

1976Based in Wootton, GB· patent location history

2000Based in East Ham, GB· patent location history

2011Patents assigned to USA BASEBALL (1)· patent assignee history

2011Based in Morrisville, NC, US· patent location history

2020Patents assigned to R B RADLEY & COMPANY LTD (1)· patent assignee history

2020Based in Chestier, GB· patent location history

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
PLESSEY HANDEL INVESTMENT AG	1	1976
R B RADLEY & COMPANY LTD	1	2020
USA BASEBALL	1	2011

Locations